# CVE-2026-39825: ReverseProxy forwards queries with more than urlmaxqueryparams parameters in net/http/httputil

> ReverseProxy in Go's net/http/httputil may forward hidden query parameters, bypassing Rewrite function sanitization checks.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 7 May 2026
- **Updated:** 8 May 2026
- **Also known as:** AZL-98652, BELL-CVE-2026-39825, BIT-golang-2026-39825, CLEANSTART-2026-AP95422, CLEANSTART-2026-EL93151, CLEANSTART-2026-FO79285, CLEANSTART-2026-MC77082, CLEANSTART-2026-QL84214, CLEANSTART-2026-RJ47972, CLEANSTART-2026-UK88446, CLEANSTART-2026-VG72480, CLEANSTART-2026-YP42383, DEBIAN-CVE-2026-39825, ECHO-85da-0561-9161, GHSA-h74g-238j-357m, GO-2026-4976, MINI-22x8-j353-xvg3, MINI-24pg-3h96-9g9j, MINI-24wv-47pv-w5wx, MINI-255f-57cf-rq92, MINI-259w-4g8m-6rp6, MINI-25gv-w356-fg9f, MINI-25m8-vfg8-36g8, MINI-25q5-ch99-3vqj, MINI-27q3-5vfw-2j69, MINI-29qc-553f-4rwv, MINI-29w4-v3f5-2h95, MINI-2f9v-8cgr-r673, MINI-2fj6-vwfc-9pf7, MINI-2fqc-pp4c-q4vp, MINI-2gjf-p4wm-v5f3, MINI-2gx6-2745-73rp, MINI-2h9m-m9q7-6qx8, MINI-2hh9-cq5f-qp5m, MINI-2jxg-m7v4-x6jr, MINI-2mh6-4q37-cr42, MINI-2ph3-wfcr-3hg5, MINI-2q23-wr9f-qv83, MINI-2q83-65xm-w437, MINI-2qrr-7r8w-8232, MINI-2qxc-x82p-4rwm, MINI-2r38-3pc9-r3h4, MINI-2vhj-vj2h-qx66, MINI-2vmr-866c-mcjh, MINI-2w6f-2qv2-pfp6, MINI-2w6h-mg79-85pf, MINI-2w7f-qpw4-hmv6, MINI-2wj9-gjpg-4gwp, MINI-2x69-7fqx-774j, MINI-32m3-jjqx-789x, MINI-32m4-r3rx-2hfp, MINI-333r-rr2w-8hwj, MINI-3452-48j7-9qwh, MINI-3484-4j8g-wjw6, MINI-34pg-m9mx-mmwv, MINI-35j6-fp2g-6gqp, MINI-35q5-4g79-qhw5, MINI-365v-r8gm-xwmp, MINI-367w-vm3h-r8vh, MINI-36c8-j2cm-39r6, MINI-36hf-rw8w-mqpw, MINI-36wf-f8cx-fwgc, MINI-385v-c3wv-44fj, MINI-396c-2fwj-5mm4, MINI-3f2c-fmc5-2q5f, MINI-3f98-767p-g64q, MINI-3g4c-5cj9-6qw5, MINI-3hmg-fw8q-g5xf, MINI-3m53-57xx-7qjp, MINI-3m6x-947q-pqmj, MINI-3mcc-phpm-g329, MINI-3mqp-j4m5-g2m6, MINI-3p22-rrpw-5hmw, MINI-3p3p-c2r4-w594, MINI-3q4c-6p57-9736, MINI-3q4h-w29q-v7rv, MINI-3q8p-89q9-9w7r, MINI-3q9j-9fq2-g3cj, MINI-3r3w-5xxf-jvqf, MINI-3r46-w6jj-2f4q, MINI-3r9q-53h3-v67m, MINI-3w46-h4q2-8438, MINI-3wq2-xxcm-pj25, MINI-3wqw-9h99-3354, MINI-3xg2-fhc2-9r3v, MINI-3xrh-8f3f-9v9m, MINI-3xw2-5r9x-73fv, MINI-42m2-553p-mg2x, MINI-43g6-x5mr-gv2c, MINI-43gc-j89h-45qx, MINI-44pr-px4r-55vx, MINI-44wf-jcfw-rm44, MINI-452h-cwcv-7jrf, MINI-453w-r552-p7gg, MINI-456j-mx85-qr3p, MINI-459g-2qhh-g2j8, MINI-45mh-g44f-qhrr, MINI-45wr-45q7-gpgh, MINI-46cg-cq42-xg38, MINI-46v3-qqx7-q8f6, MINI-477v-827q-9678, MINI-47m7-53fc-hx7v, MINI-497g-8mx9-8qg3, MINI-4cq4-28v2-wm28, MINI-4cr4-rvpx-xwj9, MINI-4f28-hq9m-7r9h, MINI-4frp-vmg2-384q, MINI-4h59-9ggc-95qp, MINI-4hjw-m4vh-jvh9, MINI-4j4q-v9x5-9pf9, MINI-4j8m-g92c-mg7q, MINI-4v8v-3m6j-cc2q, MINI-4wj2-79pm-372h, MINI-4wrv-vjxh-xqww, MINI-4wvc-2xh7-rrvm, MINI-4xxg-v3c7-5j6x, MINI-52r4-fqx6-grqp, MINI-552p-h3wh-6835, MINI-554h-58pw-6c63, MINI-55hp-76vx-p3vg, MINI-56mf-m4qc-qvv9, MINI-5847-4wg6-p6jq, MINI-5966-rr3q-f97c, MINI-59wv-mx7v-646j, MINI-5c5x-9h5v-3rhx, MINI-5c9m-6rff-mvf9, MINI-5f76-56wj-j66p, MINI-5fvp-3466-2pvf, MINI-5h47-4hj7-9fq9, MINI-5h85-3h85-rwqm, MINI-5hjv-q7m2-6qrc, MINI-5jr8-w3w3-vq8g, MINI-5m42-95xx-w23r, MINI-5p5v-f69r-w3pw, MINI-5p7x-9xvm-3jcf, MINI-5q8m-p896-qhxj, MINI-5qcm-3jg4-r2pc, MINI-5r58-5x8w-cqqr, MINI-5r65-wh87-j3hp, MINI-5rvf-h9ch-mcx9, MINI-5v3r-9xv8-8jv5, MINI-5vcg-fvfc-gx57, MINI-5vr4-jh6g-x849, MINI-5w62-8h7x-3h7x, MINI-5ww2-46g9-7m6m, MINI-5xrm-4hph-3r9h, MINI-6277-j5c9-53h4, MINI-6298-mp27-gw53, MINI-62j9-gfpg-23hv, MINI-62p6-6jqx-8vqg, MINI-632c-mfm5-r7j7, MINI-63j9-fpf5-8vwr, MINI-63jh-5crq-fmgc, MINI-63mp-c242-rw73, MINI-63p2-944g-fqrp, MINI-63wr-mhhr-m2rr, MINI-6423-qf25-p8vm, MINI-64cx-g2cr-3hgw, MINI-64h4-jqg7-8xp9, MINI-6556-3f8g-mffw, MINI-65jg-3fqp-cmxf, MINI-6685-f496-x3vv, MINI-66r4-h9vp-q349, MINI-66wg-gpg3-3hxj, MINI-675g-qgm3-jfw6, MINI-6882-f8x6-pwj8, MINI-688q-g2r8-v34f, MINI-689h-2qhp-r2c7, MINI-68mg-5c6v-xcjq, MINI-69c9-jrgq-4prm, MINI-69qf-g8hh-g5px, MINI-6c9j-fq74-93qp, MINI-6f7w-gqq4-xwq4, MINI-6f97-gg4p-7rff, MINI-6fmg-7cwr-35x2, MINI-6grv-wg79-92v2, MINI-6h63-6c5r-5j55, MINI-6m5f-cx25-243w, MINI-6mg3-h645-crj4, MINI-6mwg-jf6f-ww5m, MINI-6pgj-g525-3hhf, MINI-6pww-5qhm-wf6q, MINI-6qhh-jwr9-mq87, MINI-6r5x-r564-56jx, MINI-6rcg-xcjw-x7qm, MINI-6rm7-75fv-rgmr, MINI-6v6f-xvvg-qg5v, MINI-6vg3-7fhc-hj4v, MINI-6w33-mxx2-xhv6, MINI-6wg3-q597-9m54, MINI-6wwm-7qfm-vg4h, MINI-6x22-7wr3-f96f, MINI-6x7x-2pg4-w9v9, MINI-6xqp-5m2j-35ch, MINI-6xwv-2x4v-pjh7, MINI-7297-77qv-3ph8, MINI-7379-m6xx-3jvp, MINI-73jf-53qm-828q, MINI-73q5-jc68-498w, MINI-73xw-x2xm-7mm2, MINI-7425-q59h-cccc, MINI-74j6-f926-gx9m, MINI-755m-5mjm-c258, MINI-75gx-h6c9-84q9, MINI-76hw-r5h9-mhvp, MINI-76ww-3wx2-x4mc, MINI-784w-hhg2-3xg4, MINI-789r-7mpv-qx7w, MINI-78x4-5xxv-c69f, MINI-795f-6wcj-7gh8, MINI-79jx-rhj7-xgwm, MINI-7c72-pj7x-chrx, MINI-7c9g-f4jh-vqx2, MINI-7cf6-wjgm-245g, MINI-7fj9-wx9w-xxfv, MINI-7fvf-mm92-8888, MINI-7g94-p9rf-ccf5, MINI-7g9r-38xp-3v97, MINI-7gf5-rg39-cg84, MINI-7ggg-xcq8-r533, MINI-7h4w-3wv2-5f79, MINI-7hr6-2jr9-xpgf, MINI-7j4j-42wj-7qc2, MINI-7jgf-7c9j-cwhf, MINI-7jjg-vmj7-f79q, MINI-7jm3-qgrp-wmc8, MINI-7jpp-xg7m-7v7v, MINI-7mj8-fxrx-4m42, MINI-7r34-4mcx-vxfr, MINI-7r65-rh4r-3gxq, MINI-7rpc-67xv-q8qg, MINI-7rph-43vg-822x, MINI-7vhw-99rr-rvrv, MINI-7vjm-73r7-grq9, MINI-7wrw-6q6q-4pw5, MINI-7x64-r762-cxpp, MINI-7xv2-mf4r-mprm, MINI-82cw-9c92-wj73, MINI-82mm-fgxc-g7jc, MINI-836h-7xv7-fqh3, MINI-83cv-h3w6-fp86, MINI-83qx-4f68-3h49, MINI-83rm-pjw4-3p8q, MINI-849p-6hp7-5x6q, MINI-85jh-5f39-rg7v, MINI-86cg-27hh-6frm, MINI-86jp-rc25-85rm, MINI-883c-rgfm-vw43, MINI-88c3-3gp2-f989, MINI-88jf-5h3j-7rfc, MINI-88qm-q6p3-mrf8, MINI-89qp-p8vm-pjh2, MINI-89xw-fvj7-rm7c, MINI-8ccg-7cr8-xh45, MINI-8fc3-g5hw-g27h, MINI-8fjv-v59p-hh7w, MINI-8fm8-pqrq-52fr, MINI-8g7r-2gfr-mqf7, MINI-8g9w-wxjj-pppf, MINI-8hvj-pw8x-ccj6, MINI-8j7p-5p26-4m98, MINI-8jcp-63r2-mm84, MINI-8jf2-r4q3-g496, MINI-8m8h-7396-x67r, MINI-8m99-9h74-p9x8, MINI-8mxw-v8qp-p4w3, MINI-8pp8-5g98-5rg3, MINI-8pqj-5h5j-vg53, MINI-8r99-35xf-c7w6, MINI-8rgw-qrcp-2cgp, MINI-8v38-rpr9-q78c, MINI-8v69-crqm-xj56, MINI-8v8f-358m-pv89, MINI-8vg6-prp6-hv3r, MINI-8vvw-wp6j-f69w, MINI-8vww-8q75-v8fq, MINI-8w4m-6fjp-3rh6, MINI-8wh3-6x9p-g7fv, MINI-8wj8-vgmq-v65c, MINI-8wv8-4vxj-vvhp, MINI-8x3v-hxqc-x428, MINI-8xhq-jvc3-fcwp, MINI-923p-vg5j-3g4r, MINI-9292-cvph-fh52, MINI-92jr-22gj-898g, MINI-92v8-6fr6-w345, MINI-933p-rw7j-xqfm, MINI-93c7-7whc-m88w, MINI-93xc-v5mg-hp7c, MINI-94fc-2hqx-wmp5, MINI-94pf-28x9-w633, MINI-94pv-hg54-w2pw, MINI-94vm-p9cf-669m, MINI-968m-r3hp-4c6f, MINI-9798-5hfh-6g7w, MINI-97gc-gh68-4xrr, MINI-98pr-qvg6-w86q, MINI-993r-jwp7-xch2, MINI-9942-mrx4-g8x9, MINI-99h5-8mwj-qxv3, MINI-99jm-pjfm-xqq8, MINI-99p2-cwj9-57m7, MINI-9c5j-78jc-qpwx, MINI-9c64-r9vc-mrrc, MINI-9cph-5698-6qpr, MINI-9f57-5xjm-j9r5, MINI-9f8f-cv3q-hhxg, MINI-9fh8-9rw9-73hh, MINI-9fvq-62g7-7g9c, MINI-9gfc-65xx-pvmg, MINI-9hmm-mmxp-39r8, MINI-9hr7-rfw6-7hj9, MINI-9hwq-3mgf-f244, MINI-9m23-f46v-6xq4, MINI-9mwm-f454-f26c, MINI-9pq8-525c-vchg, MINI-9px4-3xw7-vhf9, MINI-9qg7-94w2-fpjh, MINI-9qg8-497v-84cc, MINI-9qgx-x4xf-q59h, MINI-9qmj-m9c3-g9x9, MINI-9qr5-xx96-c657, MINI-9rvv-9gwj-hf2f, MINI-9v4m-qmcw-h738, MINI-9vh9-256x-6xrx, MINI-9vr8-m76x-2prm, MINI-9vxw-59qx-jhcf, MINI-9w4x-x4jg-v2r6, MINI-9wv3-7vgq-fpcm, MINI-9x4w-pf6h-x7hq, MINI-9xrm-hwf8-rmm2, MINI-c2j6-x9c3-jhrr, MINI-c2xc-94jc-c8fr, MINI-c3jq-5mq5-qgxr, MINI-c3wh-3836-w4wv, MINI-c49f-w5vq-fjmw, MINI-c4q4-wmrv-pxcg, MINI-c5g5-6w8w-mprv, MINI-c6jg-x8cg-fg3h, MINI-c6p7-x47j-4hm4, MINI-c74c-rw3x-2w92, MINI-c794-3hxh-f8ph, MINI-c84g-hv75-29pv, MINI-c9jc-qrvp-g52h, MINI-c9jv-pw4j-mvj9, MINI-c9m9-c2g3-mp28, MINI-cc44-4vj3-rm42, MINI-cc48-c657-63cm, MINI-ccq5-4c5x-5r89, MINI-cfq5-3gj6-mcxr, MINI-cfqm-g6rp-5cr6, MINI-cgcv-j7wg-fhr4, MINI-cgj8-2m7f-cqgr, MINI-cgqw-7r8r-wcfx, MINI-chfw-cwg8-9jp5, MINI-chpw-fm7v-r74j, MINI-chrr-jxq3-g3rf, MINI-cjh3-p5c3-mwx3, MINI-cjmq-4m4q-vf4f, MINI-cjvr-gjv7-prfw, MINI-cjwr-4f9v-q2ff, MINI-cm2h-c63q-59h5, MINI-cm42-3m22-frp7, MINI-cp7m-fqch-rfhp, MINI-cqgg-mq42-6p4q, MINI-crc8-qfvj-5cg2, MINI-crh7-5r69-fqhw, MINI-cv2m-2gw9-9gm2, MINI-cvqp-fh22-c4j3, MINI-cw82-h6xv-cfxh, MINI-cw8v-m6rj-j3vc, MINI-cxx4-qm5v-hj7g, MINI-f24c-j6hw-qvwx, MINI-f262-wr88-8444, MINI-f3c3-wqq5-493j, MINI-f555-37cm-m648, MINI-f564-3h92-99q7, MINI-f5r7-88x6-xrm4, MINI-f63x-gx89-c575, MINI-f6cj-967r-w2xg, MINI-f7h3-wc84-9c3h, MINI-f7qx-pmhx-3mjm, MINI-f85x-g56w-jg22, MINI-f8cm-mvfx-f763, MINI-f96x-hhc4-w849, MINI-f9cj-g3cw-fr5f, MINI-f9g4-q7fv-p2qg, MINI-f9wh-86fp-9xfh, MINI-fc66-59cj-8pcg, MINI-fcrm-2hq2-f47h, MINI-ff94-hvfv-q72h, MINI-ffh4-6f5f-rr37, MINI-fhc9-vq29-3pmm, MINI-fhpx-r4fv-93m4, MINI-fhxm-3p8w-2p7x, MINI-fjqf-9g59-jfwm, MINI-fjqr-vq7c-mm5m, MINI-fmr2-2q4c-c932, MINI-fmr8-5fhv-c2hq, MINI-fp48-vr5j-v2hr, MINI-fpfw-f384-h328, MINI-fpj2-v5ww-24f6, MINI-fpmq-w7wv-8mf2, MINI-fq64-mq7g-8j3g, MINI-frqq-4xg2-3mgf, MINI-fvvx-fjx7-hw3q, MINI-fw8p-5g3r-9gm8, MINI-fwf2-gwfg-444m, MINI-fwhm-fpgm-8gm8, MINI-fwwj-46gj-g8fr, MINI-fxg7-77q8-69h5, MINI-fxwf-3qm8-69fm, MINI-g227-9gxg-4622, MINI-g24v-6h5r-x8qw, MINI-g267-w5ww-496p, MINI-g2j7-jwf6-v3vm, MINI-g3cr-h497-9x2x, MINI-g3ph-xgwh-8p8g, MINI-g57c-62qq-9pqp, MINI-g5r3-rxvv-jmgf, MINI-g624-x473-35pc, MINI-g64g-8vm9-22c9, MINI-g7x2-4r55-3wj3, MINI-g89c-397g-24m4, MINI-g8j2-8f7q-8gq4, MINI-g8qp-c85p-3mxg, MINI-gf2j-fxxh-6p66, MINI-gf5g-9j9r-269v, MINI-gfjv-xvg7-pv9w, MINI-ggwr-ffx6-58f8, MINI-ghqw-6479-gqjf, MINI-gj3p-wp4q-chcp, MINI-gjgg-vrm8-9x8w, MINI-gm5v-jxgv-v4qf, MINI-gm9g-qp88-9f9c, MINI-gmpg-3rv7-29fp, MINI-gmvq-jq72-9m6j, MINI-gv42-952v-4x3w, MINI-gvwh-cc33-9xwv, MINI-gwpr-2mw7-5qr4, MINI-gwwc-4vx3-5mf8, MINI-gxc2-c5pm-36m8, MINI-gxw7-ccq6-fxm7, MINI-h25x-898q-vhqq, MINI-h26j-rq2w-4gph, MINI-h2qp-37j3-x577, MINI-h56g-gxx3-7964, MINI-h8cf-g96h-3prc, MINI-h8mc-f77x-x82r, MINI-h8w7-27mg-865j, MINI-h96w-hjfm-28wx, MINI-hc6v-jp4x-r278, MINI-hcjg-42q5-pc28, MINI-hfcg-r383-rxg2, MINI-hfgp-m47g-7jmq, MINI-hfjw-4pc4-q472, MINI-hg89-v6wg-9hc6, MINI-hgm5-2fp9-8wfj, MINI-hgr7-jqhq-6p3q, MINI-hjjg-xm49-76f6, MINI-hm34-qhjp-xm43, MINI-hmgp-453j-8v2p, MINI-hmgx-5pqm-44c9, MINI-hmpp-hc6h-82j9, MINI-hph7-334h-hh4p, MINI-hq6g-2rjv-7cqm, MINI-hq9p-fm8c-r6qx, MINI-hqq8-3hhh-q62h, MINI-hqr8-g6cx-85gp, MINI-hqx9-h8xh-cvgx, MINI-hrh9-gjf3-66rj, MINI-hrp4-fr4p-qx34, MINI-hrp6-mjcv-h2m8, MINI-hv22-mg5h-8w34, MINI-hv4j-8wrc-pqcm, MINI-hv73-4872-4mmq, MINI-hwhw-cqv5-5pg6, MINI-hwv9-m2qg-5247, MINI-hx44-7mj5-2mhw, MINI-hx68-prpj-q5fh, MINI-hxv8-g2gq-mp57, MINI-hxwg-28r9-q8rq, MINI-j326-5795-cpwq, MINI-j3p7-cjh7-wjx5, MINI-j3r5-rj33-r6f4, MINI-j3w2-r4f6-vp4x, MINI-j3wx-hx7r-mq93, MINI-j439-rq8c-v4wr, MINI-j53v-5g3c-g688, MINI-j646-737w-vvxm, MINI-j68p-jrgh-6fmq, MINI-j76c-wp98-26wr, MINI-j7mx-cp69-fc4x, MINI-j7xj-6mgj-rv4x, MINI-j8h8-2hrp-3qc4, MINI-j8qw-p9mr-c2rq, MINI-j9vx-m8c4-3j54, MINI-jc73-xg7v-h8c7, MINI-jf52-mj3g-9xrw, MINI-jfh7-xhcm-5rgj, MINI-jg5f-vrxp-cjgc, MINI-jg8g-2c96-hvv4, MINI-jggh-rq59-w8gg, MINI-jghm-7xq6-546m, MINI-jgm5-8crw-53wm, MINI-jgq2-3fpp-3gqf, MINI-jh9f-9q35-94wp, MINI-jm6r-659c-xw5j, MINI-jmhq-v523-qh5p, MINI-jp89-7h95-fhgv, MINI-jqxr-9jm9-wppg, MINI-jrjw-3mpm-hq44, MINI-jv7x-hv6v-49j2, MINI-jvg4-hj9j-9q3p, MINI-jvj8-5jq4-5qcv, MINI-jvqw-66hf-vhfx, MINI-jvw9-453g-hjrc, MINI-jxmh-3fgg-2fwx, MINI-m264-qv38-frg9, MINI-m2g9-p65q-8g93, MINI-m2mh-44vg-r849, MINI-m2x2-c837-p499, MINI-m52j-pgp5-r2rr, MINI-m52m-c8gf-3fxm, MINI-m5r9-39p8-j8x9, MINI-m63v-766w-mjg9, MINI-m65m-65m2-pxc6, MINI-m73q-qj73-c396, MINI-m74f-55wm-9x73, MINI-m7hp-487w-rwwm, MINI-m7xx-chmm-58q8, MINI-m99x-hf99-wf7g, MINI-m9gv-96cm-ww24, MINI-m9p8-vcfm-vc79, MINI-m9r6-p58p-4qjr, MINI-m9rc-jvj7-h4v9, MINI-mc3j-w5v2-q52p, MINI-mfph-hv82-gxh8, MINI-mfx7-chgh-c27r, MINI-mg2j-74pp-h998, MINI-mj7g-7m5g-778g, MINI-mjh3-6368-vvfx, MINI-mjp2-r5mw-8jx9, MINI-mmmc-mhw7-v377, MINI-mp2m-8r4c-9cc2, MINI-mphh-q9gc-c7r5, MINI-mpwg-87c7-3wc3, MINI-mq27-m74g-4q88, MINI-mrc4-cx5x-53m5, MINI-mrgf-gcqx-8frm, MINI-mv9x-9c7h-qgwj, MINI-mvpp-qhp2-79r2, MINI-mwfg-2456-cgc5, MINI-mwjj-c3mj-hqgg, MINI-mx7c-xr9h-v4mr, MINI-mxrc-j33h-r434, MINI-p235-cv8p-gwq2, MINI-p2gx-8wvx-676f, MINI-p2vh-5m2w-58hh, MINI-p38q-v3m6-x925, MINI-p3f2-hvxq-v3fw, MINI-p45q-57px-xg4g, MINI-p4cq-fgvv-8crm, MINI-p5fg-q8wh-c366, MINI-p5xx-c5rg-9464, MINI-p684-2pm3-w8rq, MINI-p6qh-fcfr-96cr, MINI-p95p-x2mr-f338, MINI-pcjj-3f8p-62qp, MINI-pcm5-jmf3-rc46, MINI-pf35-wrjw-vqx2, MINI-pf6j-v856-vvmw, MINI-pf7h-c9gw-m43x, MINI-pfgp-pw3r-ccwp, MINI-pfh9-2jjm-ff4r, MINI-pfwg-27mw-5cmg, MINI-pg6j-ffxf-355v, MINI-pgq3-fhmh-3pg8, MINI-pgxq-fhh3-x87g, MINI-ph5q-69jp-r2vf, MINI-phw8-pxcf-p22c, MINI-phxx-9v97-wjh7, MINI-pjg8-gcc6-7pg8, MINI-pmjw-8ghx-2mwh, MINI-pmmm-58wr-qh8f, MINI-pmpf-j243-v4pj, MINI-pp5c-8vj3-3q38, MINI-ppmf-c8j5-wm93, MINI-ppvm-64c8-69rv, MINI-pqcc-6vj2-4pw8, MINI-pqw9-33jr-3xr5, MINI-prv8-3mvm-3j8f, MINI-prxj-f3p8-rpq9, MINI-pv27-6pjv-j5xm, MINI-pwf6-m25f-xm6q, MINI-pwf8-7h8m-pqhw, MINI-pwgh-fm5w-f28x, MINI-q2c6-fr8g-5vv7, MINI-q2gf-96x7-hrc7, MINI-q39h-22x2-8966, MINI-q3hc-42qr-ffr3, MINI-q3m5-52j6-j792, MINI-q3p4-m6f7-c4j2, MINI-q4qh-9m6g-hgvj, MINI-q4wr-fq6g-qgjv, MINI-q6qq-wj4p-58rh, MINI-q7wm-4q48-8wqr, MINI-q7xg-5gj8-fc8p, MINI-q94x-wp56-9h69, MINI-q99q-3qwr-4gcr, MINI-q9hf-9mp8-vjgp, MINI-qcwg-fv9r-pg54, MINI-qfcv-jg73-f6cm, MINI-qfmw-ccrg-9vjg, MINI-qg2r-939r-w7h8, MINI-qg58-57p5-h6qf, MINI-qg85-wx94-9jcw, MINI-qggv-f2g2-gwc4, MINI-qj7x-hx2h-rx87, MINI-qjj6-vqqf-xwgg, MINI-qjmp-m5mg-5xv9, MINI-qm4f-qv2m-grq5, MINI-qm9p-6m92-cpqw, MINI-qmg9-49pc-pfm9, MINI-qmhj-gvg4-h43x, MINI-qp3p-8gv5-qvm9, MINI-qq5w-4cfj-v6f6, MINI-qqfh-mw66-x8rf, MINI-qrv8-x3xh-hh8f, MINI-qw73-c4wg-7w7f, MINI-qx3p-c9hx-67xw, MINI-qx42-8wr2-4h8q, MINI-qx4f-4g4h-pq4x, MINI-qx52-hgm2-77cp, MINI-qx99-x5xq-jh4m, MINI-r263-p6j4-fqrg, MINI-r2jc-9687-2qwg, MINI-r2p8-5qpg-wqm2, MINI-r2qv-8v8g-gfrc, MINI-r3gq-5q3f-5748, MINI-r44r-xp9q-q6v5, MINI-r4rq-c899-2jq2, MINI-r5hh-p3wq-g23q, MINI-r5vw-5g34-jcpp, MINI-r6vp-5mjv-5jm4, MINI-r6vw-h447-mpgj, MINI-r7g2-hmjg-hmjq, MINI-r865-7w6r-gvxv, MINI-r88w-3f9m-p9h2, MINI-r8q8-x25p-fq48, MINI-r8qh-j6c9-c5gh, MINI-r929-89p6-8gfq, MINI-r9g4-983w-mppg, MINI-r9rp-r22w-62fj, MINI-rc65-3jg6-rmrr, MINI-rcf3-j93h-xxmc, MINI-rcp6-2p74-jh8h, MINI-rf49-7rv6-c96q, MINI-rf5m-2pcx-w64h, MINI-rfx6-jjx8-prh9, MINI-rg8x-6r49-rxfx, MINI-rgwx-qf38-h7pf, MINI-rh2f-8gr6-qmrw, MINI-rhq4-cccq-v4mv, MINI-rhqh-jqp2-q4qf, MINI-rm2q-89jj-9v7p, MINI-rm66-33jf-j3cp, MINI-rm6g-mf67-f2x4, MINI-rmq7-jpcc-xwv6, MINI-rp6r-h95w-835c, MINI-rqwx-wj5v-h58f, MINI-rqxp-h52j-94xp, MINI-rrc2-9f92-5fc7, MINI-rrwp-qhf5-wg42, MINI-rvv7-jg95-wm6v, MINI-rw3x-9rr2-wm3x, MINI-rwr4-9v53-69p5, MINI-rx34-3mvj-gqxg, MINI-rx78-wgwr-f3f3, MINI-rx9q-v2rj-j4r4, MINI-rxc8-gp8m-p6fr, MINI-rxfc-mphc-vh2h, MINI-v34w-f5m8-7wqg, MINI-v3c2-q5rv-r9mf, MINI-v4qh-x3fc-p579, MINI-v5rj-qjp6-jvvj, MINI-v6f2-89x2-79pj, MINI-v6g8-7m4v-3jf3, MINI-v6w4-v76q-m298, MINI-v6wx-qc9p-ggrr, MINI-v7hh-r26f-56xp, MINI-v7xx-94wh-m8rx, MINI-v87p-986g-549p, MINI-v8g3-vr6r-6rxp, MINI-v8xc-472h-gcm8, MINI-vcj4-h78w-hhqv, MINI-vcq4-6wfx-jfg4, MINI-vf8r-px58-f96r, MINI-vg45-pphq-58p2, MINI-vh7m-mw6r-6xh4, MINI-vhff-qccg-5x77, MINI-vhfx-64jw-vhr8, MINI-vhj8-c2rg-vjxj, MINI-vhwq-52h7-8mg8, MINI-vj3c-w963-r2wx, MINI-vjmc-r32q-fx44, MINI-vjq3-pg9x-j8fj, MINI-vmg2-p42g-8645, MINI-vp4c-w97p-wmm3, MINI-vp8w-5qc9-q6pj, MINI-vpcr-ccv5-4g7v, MINI-vq8w-pc2w-2qh3, MINI-vqph-646q-4mw3, MINI-vqqh-c9c4-w7c7, MINI-vrcv-6p6r-3g2r, MINI-vx2v-j2mv-57mw, MINI-vxv6-p6q7-3x33, MINI-w233-3756-9vh8, MINI-w2rg-cf4r-cqxj, MINI-w2w2-rc6p-x988, MINI-w2xr-6977-f8fx, MINI-w33c-w23x-px3h, MINI-w365-mx9f-frvh, MINI-w4hr-xp2f-w3hw, MINI-w5m4-3m79-c42g, MINI-w5pj-6993-66vp, MINI-w7gj-3cv4-8r97, MINI-w7x9-r6xv-r7wh, MINI-w83g-w24q-4qhc, MINI-wc2h-m9c7-qm64, MINI-wc56-vgg4-v5r6, MINI-wf9g-447w-5q9g, MINI-wfp3-7cf3-9f4r, MINI-wfwm-gw8w-6ph6, MINI-wg63-x9gc-9m2w, MINI-wgmp-mxpv-x56r, MINI-wgvv-9hqq-w79m, MINI-wh6r-p726-53v4, MINI-whj4-cqcp-32gg, MINI-wj7h-gw3r-pjm6, MINI-wm5g-6j4j-8rf8, MINI-wm74-r67f-3vm4, MINI-wmjx-j32f-95c8, MINI-wmmx-76q7-3rpj, MINI-wmwc-9r4h-mp95, MINI-wpgj-4jj4-xq49, MINI-wpj4-hcm9-v4w5, MINI-wq3w-jcvc-j789, MINI-wqgj-crfp-rfgr, MINI-wqhw-chxr-9pxg, MINI-wrp3-fmj8-753h, MINI-wrr2-2fh4-v463, MINI-wvx8-2276-g7x4, MINI-ww4q-pr2f-vcww, MINI-wwj4-972g-685c, MINI-wx57-v28p-wj6v, MINI-wx6p-c572-g68p, MINI-x2gm-vvv9-5rvm, MINI-x377-m8vq-7995, MINI-x3j6-f2vf-jm4h, MINI-x499-4w64-52r8, MINI-x5cg-f9vc-3mww, MINI-x5pj-6967-3m72, MINI-x5qw-f5wm-hj69, MINI-x5wv-5cgf-qfp4, MINI-x676-wg55-r2v5, MINI-x6gm-xw2f-gg9f, MINI-x6hp-xqr6-64j6, MINI-x6pv-rpgv-w9h7, MINI-x7vp-8m73-7q74, MINI-x9qv-6f8h-fj24, MINI-xcpm-jhrm-5gf6, MINI-xfwf-pp7w-2mrf, MINI-xfwx-8x5r-vcr7, MINI-xg4h-vg33-4hcx, MINI-xgwg-m7ww-2jq6, MINI-xh2q-7qvp-m9pw, MINI-xjcm-m77j-jxh2, MINI-xjw4-4vqv-fxjj, MINI-xm6w-2vqx-3w9f, MINI-xm9x-93cf-2h85, MINI-xmjj-7xrh-fm3c, MINI-xmv8-fjvg-xmfx, MINI-xpgj-ph8q-786h, MINI-xq7p-647q-p88r, MINI-xq8m-588q-mpq3, MINI-xqjg-r8mv-p626, MINI-xrg2-rm6j-xmw7, MINI-xrh4-m5w3-hj2g, MINI-xv7f-hc5m-ww72, MINI-xvc5-gm93-623j, MINI-xvj6-68hh-2jj8, MINI-xvjp-gm7w-j5rr, MINI-xw37-r7c2-mh9f, MINI-xw98-85w8-345p, MINI-xw9p-3vfp-m7j7, MINI-xx6c-hqg4-729m, MINI-xx6h-c693-mxfc, MINI-xxcr-fp3x-hg88, MINI-xxv6-9qrp-m2vq, UBUNTU-CVE-2026-39825

## What is CVE-2026-39825?

CVE-2026-39825 is a medium-severity vulnerability in Golang Go, published on 7 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes the forwarded request to remove query parameters which are not parsed by url.ParseQuery. ReverseProxy does not take ParseQuery's limit on the total number of query parameters (controlled by GODEBUG=urlmaxqueryparams=N) into account. This can permit ReverseProxy to forward a request containing a query parameter that is not visible to the Rewrite function. For example, the query "a1=x&a2=x&...&a10000=x&hidden=y" can forward the parameter "hidden=y" while hiding it from the proxy's Rewrite function.

## Which versions are affected by CVE-2026-39825?

2 open source packages ship an affected version, including golang and stdlib. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `golang` | Bitnami | All versions | 1.25.10, 1.26.3 |
| `stdlib` | Go | All versions | 1.25.10, 1.26.3 |

Products: Golang Go.

## How do I fix CVE-2026-39825?

Upgrade golang to a fixed version for your release line: 1.25.10 or 1.26.3.

## Is CVE-2026-39825 being exploited?

There is no known exploitation of CVE-2026-39825 in the wild and no public exploit code.

## Other vulnerabilities in Golang Go

- [CVE-2020-0601](https://insights.sbomify.com/CVE-2020-0601/): Microsoft Windows CryptoAPI Spoofing (high 8.1, exploited in the wild)
- [CVE-2026-27143](https://insights.sbomify.com/CVE-2026-27143/): Missing bound checks can lead to memory corruption in safe Go in cmd/compile (critical 9.8)
- [CVE-2024-24790](https://insights.sbomify.com/CVE-2024-24790/): Unexpected behavior from Is methods for IPv4-mapped IPv6 addresses in net/netip (critical 9.8)
- [CVE-2023-39320](https://insights.sbomify.com/CVE-2023-39320/): Arbitrary code execution via go.mod toolchain directive in cmd/go (critical 9.8)
- [CVE-2023-24540](https://insights.sbomify.com/CVE-2023-24540/): Improper handling of JavaScript whitespace in html/template (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-39825 and fix it if it is affected.

What it is: CVE-2026-39825 is a medium-severity vulnerability in Golang Go, published on 7 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-39825 in the wild and no public exploit code.

Affected packages and fixed versions:
- golang (Bitnami): affected all versions; fixed in 1.25.10, 1.26.3
- stdlib (Go): affected all versions; fixed in 1.25.10, 1.26.3

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-39825/ (Markdown: https://insights.sbomify.com/CVE-2026-39825/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-39825
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-39825
- OSV: https://osv.dev/vulnerability/CVE-2026-39825

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-39825/
Summaries are generated and may contain mistakes; the official description above is the record.