# CVE-2026-29181: OpenTelemetry-Go multi-value `baggage` header extraction causes excessive allocations (remote dos amplification) > Attackers can cause excessive CPU and memory allocations in OpenTelemetry-Go by sending multiple baggage headers, leading to denial of service. - **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** Not needed - **Fix available:** Yes - **Published:** 7 Apr 2026 - **Updated:** 17 Sep 2026 - **Also known as:** AZL-82085, AZL-82088, AZL-82094, AZL-82109, AZL-82115, AZL-82211, AZL-84801, CLEANSTART-2026-KN30068, CLEANSTART-2026-LN79674, CLEANSTART-2026-MI18289, CLEANSTART-2026-MS30353, CLEANSTART-2026-OV15001, CLEANSTART-2026-OX52172, CLEANSTART-2026-SJ52043, CLEANSTART-2026-UD17568, GHSA-mh2q-q3fh-2475, GO-2026-5506, MINI-22fp-r66q-hfww, MINI-22h5-6f6p-96qw, MINI-23mh-gcgq-54q6, MINI-25p5-9fxv-6jqc, MINI-264m-j5jw-pxv4, MINI-272m-p7wj-r78w, MINI-284g-gjvm-hhph, MINI-2853-qxp4-fgqv, MINI-296r-8ghh-6m2r, MINI-29v8-4qgq-4xgc, MINI-2c4m-4gpc-v83h, MINI-2f2q-wc55-fmh6, MINI-2fjr-r489-xcwh, MINI-2h62-pf69-52f5, MINI-2hgr-h39f-fqf4, MINI-2jrq-3gq2-w46j, MINI-2m49-wm3h-cj6h, MINI-2mfx-2c3j-7hfg, MINI-2pc9-4g53-5922, MINI-2pg6-cqw5-6cqj, MINI-2rhh-27h9-p3r2, MINI-2vcj-qhx2-vgh5, MINI-2w43-873q-p3r7, MINI-2w63-3mjh-rrmp, MINI-2w8p-4m89-3x95, MINI-2x4f-94wx-q8c8, MINI-2xf7-7xxw-j48c, MINI-32pr-pf4f-3p66, MINI-3529-9xqv-3rvv, MINI-356w-fvv6-4c66, MINI-37gr-fjp3-q87j, MINI-37hf-6qp9-3wcf, MINI-37mp-cf2q-5p7f, MINI-3845-jq77-rf3h, MINI-386h-w82g-56wg, MINI-38cw-4876-82v8, MINI-38v4-h7jp-wc97, MINI-3984-hjqp-3x26, MINI-39qp-64m8-qjfh, MINI-3c8w-2r4v-4qqh, MINI-3cvj-49j3-7pr3, MINI-3f76-34p3-rf4v, MINI-3fj3-q4pp-q5qg, MINI-3gvh-3x54-xwwh, MINI-3h7v-wwhc-294r, MINI-3jhg-mf55-53xr, MINI-3jp2-5g7m-8mfm, MINI-3m7m-3qx4-p23v, MINI-3mg4-px8j-qwxj, MINI-3p7c-mf2w-4x8h, MINI-3pcx-ccch-32cc, MINI-3r34-mc23-c2h4, MINI-3v4f-9j5v-qm45, MINI-3v89-vf63-9mf7, MINI-3vpv-rqh7-66xc, MINI-3wmp-77jv-hm68, MINI-3x84-85xc-pjcv, MINI-3xjh-75h6-h2xx, MINI-3xjw-wr83-9866, MINI-3xx6-h84g-95w3, MINI-42gj-fp3h-r9f8, MINI-43gv-pw9j-3q9v, MINI-448c-7p27-j57p, MINI-44gr-2p5w-hgpg, MINI-45fg-cg5c-2p65, MINI-49v2-p43f-9prw, MINI-4f25-jgwp-6vqg, MINI-4f4r-mqmq-74qw, MINI-4f82-gf58-87pp, MINI-4fhm-2887-c2gv, MINI-4fjr-7vjm-gccq, MINI-4g74-2qwm-c5g2, MINI-4hp7-wwh8-6c3w, MINI-4j23-mxg5-vrm5, MINI-4p39-jwf6-5534, MINI-4p44-5pmx-fc55, MINI-4q6x-x7q3-q8ph, MINI-4r22-4xcp-268j, MINI-4rmm-f5xp-69jh, MINI-4rr9-5ff9-v664, MINI-4v89-8f9r-5v8r, MINI-4wfj-cwx3-5xvp, MINI-4wfj-fc3j-xqfr, MINI-52c3-49q2-j7hr, MINI-533w-3r3w-854v, MINI-53hv-x99f-mh95, MINI-54f8-6hv9-93gc, MINI-56jr-5qv9-x4gf, MINI-56q2-2gq3-wchr, MINI-56q6-324r-75q3, MINI-5758-6vmq-hhff, MINI-577c-w6pf-m936, MINI-588w-hwxr-hpmv, MINI-59pv-4rg2-2x5w, MINI-59r9-v2x9-794g, MINI-59vj-966g-x7v2, MINI-5fjj-xxg7-85h8, MINI-5fm2-wf73-vgv2, MINI-5fxf-4gh4-cg77, MINI-5g6r-22vx-rrp9, MINI-5g87-44x9-rxf4, MINI-5gcg-c3j3-5c4v, MINI-5h4r-rwc5-52p2, MINI-5h6v-vfqh-fgr7, MINI-5j7h-hmjp-wpwv, MINI-5jrq-cx8g-3x67, MINI-5mr9-gjq7-7jgw, MINI-5pj9-v8rx-2wmh, MINI-5qcm-9c6x-5j8v, MINI-5qx7-7h32-68xx, MINI-5rg4-249x-wpxx, MINI-5rwq-7vqc-379m, MINI-5xqg-fh72-2j6m, MINI-62p6-3922-946m, MINI-63q7-h5cf-7hmx, MINI-6557-639m-4xj5, MINI-66p4-86qh-5gqg, MINI-66w4-5423-mmg3, MINI-66wc-8r2g-cv86, MINI-678x-2jr6-pv29, MINI-685h-89j4-3cgh, MINI-68g5-crr8-j3m4, MINI-68mw-xcj5-569q, MINI-69c5-wh4c-3373, MINI-6c9h-8f29-f2r2, MINI-6cfw-qxwp-rp44, MINI-6fxm-hg66-7q32, MINI-6g42-5jwq-6wf2, MINI-6jpp-62wv-v9jh, MINI-6jrq-gf3p-q452, MINI-6m9f-4qgq-447m, MINI-6mjq-wgfq-rgcw, MINI-6mqr-q5xx-5jh5, MINI-6phf-pmjp-8h3h, MINI-6pwp-35rr-fm5g, MINI-6q9c-758h-6qmr, MINI-6qjv-w4x5-p86f, MINI-6qmg-g576-mm8p, MINI-6rpx-3rp5-xwv8, MINI-6rx5-fh8g-976c, MINI-6vcg-x9g2-vp6p, MINI-6wh2-6x7h-6hwv, MINI-6wp7-j7c8-r2rw, MINI-6wqh-746r-878g, MINI-6xw9-r5pg-94mx, MINI-726p-vfqp-4g53, MINI-7389-55g4-cq7x, MINI-739h-wvmv-5g79, MINI-73hf-fwg2-chc7, MINI-7576-phxj-hh87, MINI-765h-2mj6-55v6, MINI-7786-3jg6-8745, MINI-77gw-r2f2-rfj3, MINI-77mw-jjx4-xp5p, MINI-788m-mrfm-q7f9, MINI-78jv-jpff-wxcf, MINI-7cvg-wcj6-8h3r, MINI-7g9x-vpj8-58mc, MINI-7h37-r7r4-gmwq, MINI-7j4w-68vc-fgj4, MINI-7jmw-fmmj-x688, MINI-7m78-rw4x-3vhx, MINI-7m7f-4fcr-p6j9, MINI-7pg2-mg8h-28f3, MINI-7pxq-q8cf-xcqm, MINI-7r84-6hwc-hrf2, MINI-7r9v-4h2c-wrpx, MINI-7rf7-rw6w-c25m, MINI-7rrv-h2m2-2fj8, MINI-7vv7-rr2p-44qr, MINI-7w23-3h7j-q56w, MINI-7w2f-pgg6-fmgf, MINI-7w3c-f9xg-pm66, MINI-7x3p-qm32-f45v, MINI-7x4p-84jg-p9fx, MINI-7x7r-h96q-hvh6, MINI-824f-h6j6-3xcc, MINI-826j-87rm-qc26, MINI-8346-p3fm-5g36, MINI-8567-xgh2-3qmw, MINI-864w-h8jg-797r, MINI-8664-hrvg-x396, MINI-86g6-hfpj-xmhr, MINI-87vm-4fxf-gpcf, MINI-8c25-57g7-pc9r, MINI-8m62-9m53-pf3w, MINI-8mxr-79h2-95xf, MINI-8p46-jqm4-pr7x, MINI-8q4v-mhxh-8gjh, MINI-8qwr-26xm-93gf, MINI-8r8f-9w2q-4m2j, MINI-8vch-qfx6-p559, MINI-8vw8-h257-qmmh, MINI-8wpr-9rj6-24cp, MINI-92m3-f6cj-xjwg, MINI-92v8-hf6h-8f9j, MINI-936p-qp46-g3w9, MINI-93c3-c82w-8f3c, MINI-93fc-f958-h8wc, MINI-93p3-q857-764r, MINI-93wm-9w9r-2rw7, MINI-9452-jv4g-c4f4, MINI-94gj-jmpp-h384, MINI-94rj-88w6-8xx8, MINI-956p-vcrq-337m, MINI-95rw-pq93-89f2, MINI-9659-v4hx-7hf5, MINI-96cw-xx8h-hmvm, MINI-98w8-jvf4-6c9j, MINI-99vm-v4h2-4hf2, MINI-9cxp-ppr6-jpfw, MINI-9g2q-554g-gf39, MINI-9g76-wwh7-4w5w, MINI-9gq8-rwr8-j8vx, MINI-9hf6-p7mf-3jjc, MINI-9hvg-w83p-25r9, MINI-9mxj-j39r-557c, MINI-9q42-q86r-5rp4, MINI-9qcx-453f-xwf6, MINI-9qhr-35j2-vwg3, MINI-9r64-rf44-m4v6, MINI-9rjx-8gp4-3q9j, MINI-9rpm-5q7h-6w3w, MINI-9rvw-2gmj-gjp4, MINI-9vxj-rgm8-pjpm, MINI-9w74-m49j-c64j, MINI-9wxh-q64w-xm2f, MINI-9xj7-pfq9-f4px, MINI-9xjh-6mgv-pxpq, MINI-c2h3-jvcx-xj8j, MINI-c43v-8fwg-j3xc, MINI-c44p-77h4-962g, MINI-c4wm-qpfv-vc9f, MINI-c5mx-wqmc-pg7w, MINI-c68h-hp2x-6c59, MINI-c6hm-hx8h-rggh, MINI-c6p5-mm29-q5cf, MINI-c6p6-325g-7wr3, MINI-c6qv-456v-x8rp, MINI-c6wh-43vf-qhg8, MINI-c7jf-rjh4-9j5w, MINI-c7rg-38gv-8wxm, MINI-c848-jv4g-5rm7, MINI-c8fg-83w2-47w4, MINI-c8hj-xp7g-mpp3, MINI-c8rq-p574-28fr, MINI-c8w7-cg3x-726v, MINI-c96x-q9m4-q3fm, MINI-c975-xh82-275p, MINI-cfr2-w75h-x85m, MINI-cfv7-3vgj-6j5q, MINI-cgrp-pgf3-cqxc, MINI-chhm-xg37-g9m9, MINI-chmh-pjfx-f8w7, MINI-cj5q-9497-c66p, MINI-cjvc-r32x-8xww, MINI-cpfg-2xvj-g98c, MINI-cq7x-34xr-4m8r, MINI-cr28-5h6f-88gc, MINI-crfv-rr85-x436, MINI-crqr-h6p6-qjrx, MINI-crrg-hfxm-8wqg, MINI-crv8-v8x5-fcpr, MINI-cv2x-52wm-q54x, MINI-cvrc-54gg-c3w5, MINI-cvvg-jf67-75w7, MINI-cvwf-ghw9-gffw, MINI-cwf3-282q-3mpr, MINI-cwfj-g33m-vcv2, MINI-f226-jpm2-9r6r, MINI-f3vh-qfpv-q855, MINI-f5cq-rr4h-wr7f, MINI-ff6q-3hqc-j59f, MINI-ff8h-5qxg-rpc8, MINI-fg32-766h-868v, MINI-fg6w-j8wj-2hqf, MINI-fghh-972v-323j, MINI-fhfv-qrvx-5w9f, MINI-fjmq-jpqm-4xcv, MINI-fm7p-p4ff-949p, MINI-fmm3-545x-2chq, MINI-fp42-jj6r-pvvw, MINI-fpf3-hcff-xf72, MINI-fphf-c3qc-28g4, MINI-fpq8-j6mf-2q58, MINI-fpqf-5g6f-xqwv, MINI-fq2v-ww34-xhqg, MINI-frfx-97hc-vhvg, MINI-fwqv-39wr-hhxf, MINI-fwqv-fmhp-39m6, MINI-fww9-cg3c-676j, MINI-fx3v-r9wq-247c, MINI-fxqv-mx7x-96jq, MINI-g24p-j6hv-qp6r, MINI-g28w-9f94-4f67, MINI-g3mq-hcwm-8245, MINI-g3rv-cv59-7x9x, MINI-g4c9-4jw9-q7ph, MINI-g4v6-rq26-rqjx, MINI-g5fq-x3jc-vx7g, MINI-g5j9-cc6r-mf8q, MINI-g6x4-gx35-5cxm, MINI-g8hx-fgr9-x9v3, MINI-g8q5-3w48-gj8v, MINI-g95f-g3c8-x4wj, MINI-g99h-gc98-vffg, MINI-g9j5-mg64-fvrr, MINI-gcj4-8fj9-rq4v, MINI-gfhc-hfw7-7x23, MINI-gfwq-5j3h-6cc5, MINI-gg9p-3xvv-4h9v, MINI-ggcf-8p85-7q87, MINI-ggh8-94pm-pgr8, MINI-gh6c-vcqq-w3m7, MINI-gj5r-825p-hc2c, MINI-gjcr-9jv2-w6qx, MINI-gmx7-9x88-rg67, MINI-gpmh-39cr-wgf7, MINI-gpv3-r4x4-p8v9, MINI-gwmw-r9rw-w3j9, MINI-gx9q-jfhm-r2r4, MINI-gxwc-qg3v-x2rq, MINI-h3hx-c2w9-7r4f, MINI-h3v8-74p6-4hhv, MINI-h548-x35w-wph7, MINI-h6pv-fgvh-rmpc, MINI-h792-8g77-m4x4, MINI-h7fc-xpfv-gj3c, MINI-h7jj-jwwg-c3vr, MINI-h823-jpqh-vj65, MINI-h82x-x7hf-vp7c, MINI-h8hj-grwq-jgv7, MINI-h8jj-xgqc-4pm3, MINI-hc3c-2q42-f76f, MINI-hc3c-cc6w-8fgr, MINI-hc9r-j9f2-m623, MINI-hgxj-h8r6-49x8, MINI-hh5c-4863-5cpg, MINI-hhfc-85m8-c6rh, MINI-hmfp-8vvp-fw99, MINI-hmr5-mgj6-wjj2, MINI-hp6p-c9qg-cxvg, MINI-hpxx-8qm8-c862, MINI-hq9v-cqwg-9p5f, MINI-hqr5-r58r-gm85, MINI-hrfr-hfg5-vr7p, MINI-hv24-ch5r-4q3g, MINI-hv8p-vp72-rx6p, MINI-hw4p-h62h-76pf, MINI-hwr6-mg72-58m8, MINI-hwwf-6xg4-3vmh, MINI-hxj5-93p3-w4q3, MINI-hxpr-pm57-f9x9, MINI-j355-4xjh-8wgf, MINI-j3qx-q572-3hw2, MINI-j3rv-x49g-7x9m, MINI-j4cw-jm39-5698, MINI-j696-x2ff-jh32, MINI-j6g4-5q3p-vvhx, MINI-j8qf-67h3-hqcc, MINI-j927-crrp-m666, MINI-j96v-3h7c-668m, MINI-jf73-g7wj-8wr9, MINI-jfg6-wfmh-g9j6, MINI-jfqp-rj3x-w7wg, MINI-jhcg-xrwv-fc72, MINI-jhp5-8792-9835, MINI-jj7x-46m4-rfgh, MINI-jjvv-4jjf-84cg, MINI-jm3m-qjjp-r8gh, MINI-jm3r-w8gq-v445, MINI-jm66-93fw-pc22, MINI-jm6g-4rxm-wfr8, MINI-jpjx-9r3q-pm43, MINI-jpmw-xq23-v323, MINI-jq6w-r52f-p4h9, MINI-jrx7-c883-6353, MINI-jw73-cpxf-mmmq, MINI-m2gx-w3ph-6xmv, MINI-m2vp-mh99-g5pg, MINI-m3q2-3jwh-2v4j, MINI-m4hh-cqr6-5658, MINI-m68c-5gc5-v6q9, MINI-m6fv-r53j-jjrv, MINI-m6gj-hp9g-r8mm, MINI-m73g-w5w7-8954, MINI-m8pc-qrwf-h5c3, MINI-m8qc-q4m4-74vx, MINI-m8qg-v3p9-c7cr, MINI-mcrp-xvcq-mrj5, MINI-mfm6-5mx9-643p, MINI-mgp2-8x3w-4hqq, MINI-mh37-w84v-8hfc, MINI-mj5p-h9jq-6j35, MINI-mjpp-fmxm-624r, MINI-mjqv-hh2j-wh6x, MINI-mp63-p2xv-95pc, MINI-mpc3-53vm-327p, MINI-mpx6-77qf-4cm9, MINI-mr3c-jp98-6g6m, MINI-mrwj-w72w-72pj, MINI-mv99-8x74-37c8, MINI-mw9c-5frc-c3qr, MINI-mxpp-58cp-qcf8, MINI-p26x-6vjq-c547, MINI-p686-jq64-qmff, MINI-p6gh-fjwx-539g, MINI-p737-mfxm-jq72, MINI-p75c-hcpx-45vm, MINI-p869-f3fx-4ppc, MINI-p8x5-8jxx-37fp, MINI-pcv6-h569-2x5c, MINI-pf65-v95g-h4p6, MINI-pfg4-jq9x-844c, MINI-pfrx-gpcf-h79f, MINI-pg45-xmh9-mhpx, MINI-pg8r-jvm4-wcvr, MINI-pgv6-2pwp-rj7w, MINI-ph5v-xvqj-224v, MINI-phjw-x7ch-vm33, MINI-phq8-g5f5-8x46, MINI-pj28-f9gc-28x2, MINI-pjcw-92vr-m5r9, MINI-pjg2-2m22-w7vh, MINI-pmm4-crhf-9ghc, MINI-pp3h-3wq3-wjgh, MINI-pp3m-m38g-c4gp, MINI-pq33-v7cr-f2jq, MINI-pqwm-hx6h-7pvc, MINI-prhj-3gcc-8pph, MINI-prpj-5ch8-gchw, MINI-pv4m-qcrj-j5x4, MINI-pv4x-3rh4-5h9q, MINI-pw2x-7hx8-54pj, MINI-px86-727c-3xqx, MINI-pxg7-wwxm-jx26, MINI-q2q2-j26m-cjwf, MINI-q3vx-9p54-mvh5, MINI-q78m-q3g8-69wh, MINI-q7r2-cxq5-vhm5, MINI-q8mq-gc4g-pqcx, MINI-q99h-fmrr-hvc2, MINI-q9q3-7r49-v938, MINI-q9qv-pc5x-wmr8, MINI-qc72-w77p-9rfp, MINI-qf8p-xp83-5r9j, MINI-qhqr-m2vw-x9x2, MINI-qhqx-mcv5-q4pq, MINI-qp3p-6hm3-ghvm, MINI-qp5h-phx4-pxvr, MINI-qqmm-7698-g7x5, MINI-qr32-237p-3g77, MINI-qr3w-97jh-m32v, MINI-qrh3-vp4c-qhcg, MINI-qv5w-fhp7-7pmr, MINI-qv74-hvqm-r3g4, MINI-qvr2-6r9h-89w4, MINI-qww5-8f27-2vc2, MINI-r4f5-w25q-gqwj, MINI-r4gm-cvwf-49h3, MINI-r68w-gcqp-pp2j, MINI-r72p-cwm4-qp8g, MINI-r76h-7cj9-mv2f, MINI-r7hj-jjc9-66q8, MINI-r8vf-96gw-fjq4, MINI-rfq6-g5wg-98wv, MINI-rhgc-f94c-4jjg, MINI-rhm6-4xcr-xvgf, MINI-rhrr-fc32-64q9, MINI-rj9g-fxh4-8292, MINI-rm54-59v5-vpqr, MINI-rpqx-wxq3-6887, MINI-rq2p-vc7h-82rh, MINI-rq3q-9p23-m6vh, MINI-rqw2-m5x9-3mhr, MINI-rv63-p6cq-4939, MINI-rw9h-w2cr-r3m5, MINI-rwhm-969g-pv8c, MINI-rwq9-gpcm-xcvg, MINI-rwv2-52xv-rw2v, MINI-rx4q-w85r-p44q, MINI-rx5h-w7r6-j9p9, MINI-v27x-5gcg-wc6r, MINI-v344-v6wv-qc96, MINI-v377-ffq2-x5hp, MINI-v47m-jxmh-h2c3, MINI-v5wp-wg5x-cgr5, MINI-v6qv-5ch2-7cjc, MINI-v6wj-3c6h-2h6w, MINI-v6wq-qm57-c556, MINI-v78j-c8jg-phw8, MINI-v8h3-95cw-g9h9, MINI-v8mp-m7pp-x74g, MINI-v92c-xfc5-qqp3, MINI-v9p6-7cpx-jph2, MINI-v9w9-fmpq-qmj6, MINI-vc99-xxfm-3xg6, MINI-vff9-2432-gcpf, MINI-vh66-vx66-2w72, MINI-vhf5-wqv4-9hg7, MINI-vj69-rx5p-xf36, MINI-vj7w-96v6-2g3v, MINI-vjgr-m5jq-p8xr, MINI-vjh2-hx5h-5p73, MINI-vjqr-2jg3-36fw, MINI-vpwc-wfjc-35rm, MINI-vpwf-x6x7-rr6f, MINI-vwqm-9ff8-x93g, MINI-w2fh-g4gc-wvq9, MINI-w3f6-6cm2-5r9r, MINI-w3mw-q74f-ggh4, MINI-w3p9-grpm-8gj4, MINI-w6hg-f9c7-7ffm, MINI-w7fw-hcv2-cfjx, MINI-w87f-6wm4-v32h, MINI-wc6g-xmq8-hw93, MINI-wcfh-wc64-hmmf, MINI-wcjp-2293-hm75, MINI-wgv7-ggpc-342v, MINI-whx7-545m-fxhc, MINI-wm6w-w473-3982, MINI-wm7f-qwjv-pv3w, MINI-wmw4-8w6x-p27x, MINI-wp44-q6wq-2pfm, MINI-wp53-hg6v-562q, MINI-wpgr-948h-qp6x, MINI-wpw5-vjqq-9x2p, MINI-wrf2-686f-67cp, MINI-wrf4-wwjc-c47r, MINI-wrhr-gm4p-v58c, MINI-wvf6-cvvj-jvcf, MINI-wvhp-p6h4-6q95, MINI-wvvp-wv6g-xcpv, MINI-wvxm-vwp4-4m94, MINI-ww75-74cx-phq7, MINI-wwgm-3c47-g55m, MINI-wx82-86pc-79f8, MINI-x2qx-c72v-9qm4, MINI-x2wm-4w57-x7wf, MINI-x36w-9j8j-c9qj, MINI-x3mx-9ff4-c7h5, MINI-x42q-m9hj-h7jj, MINI-x4hf-784x-7qvv, MINI-x53m-9pq6-r9q2, MINI-x8w4-84q3-p8mv, MINI-xcrp-cfgp-mxww, MINI-xf57-x5x5-9gg2, MINI-xfjc-jj55-ph9w, MINI-xfwp-73gm-g5mm, MINI-xghc-5895-gp78, MINI-xjfv-84mq-vc85, MINI-xjh4-w8wc-wv3f, MINI-xjxj-wq2p-cgx3, MINI-xm7w-f5f3-p4w2, MINI-xmcp-5fhf-vm9g, MINI-xq92-7ffc-gp2c, MINI-xqhq-2fxp-44pw, MINI-xr2r-2q4g-v82m, MINI-xr2r-vpcf-23h7, MINI-xrfr-6c4j-8fx6, MINI-xrjp-mxrf-x2vr, MINI-xvvv-wjrx-x63p, MINI-xwm6-qwxr-4q86, MINI-xxq4-p5xx-rc2m, MINI-xxr2-2j66-xw53, ROOT-APP-GOBINARY-CVE-2026-29181, UBUNTU-CVE-2026-29181 ## What is CVE-2026-29181? CVE-2026-29181 is a high-severity denial of service vulnerability in open-telemetry opentelemetry-go, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim. ### Official description OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. This allows an attacker to amplify cpu and allocations by sending many baggage: header lines, even when each individual value is within the 8192-byte per-value parse limit. This vulnerability is fixed in 1.41.0. Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling) ## Which versions are affected by CVE-2026-29181? 3 open source packages ship an affected version, including go.opentelemetry.io/otel. It affects 1 product. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `go.opentelemetry.io/otel` | Go | From 1.36.0 | 1.41.0 | | `go.opentelemetry.io/otel` | Go | From 1.36.0 | 1.41.0 | | `go.opentelemetry.io/otel` | Go | From 1.36.0 | 1.41.0 | Products: Opentelemetry Opentelemetry. ## How do I fix CVE-2026-29181? Upgrade go.opentelemetry.io/otel to 1.41.0 or later. ## Is CVE-2026-29181 being exploited? It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-29181 exists. ## Other vulnerabilities in open-telemetry opentelemetry-go - [CVE-2023-47108](https://insights.sbomify.com/CVE-2023-47108/): DoS vulnerability in otelgrpc (uncontrolled resource consumption) due to unbound cardinality metrics (high 7.5) - [CVE-2023-45142](https://insights.sbomify.com/CVE-2023-45142/): OpenTelemetry-Go Contrib has DoS vulnerability in otelhttp due to unbound cardinality metrics (high 7.5) - [CVE-2023-43810](https://insights.sbomify.com/CVE-2023-43810/): opentelemetry-instrumentation Denial of Service vulnerability due to unbound cardinality metrics (high 7.5) - [CVE-2026-39883](https://insights.sbomify.com/CVE-2026-39883/): opentelemetry-go: BSD kenv command not using absolute path enables PATH hijacking (high 7.3) - [CVE-2026-24051](https://insights.sbomify.com/CVE-2026-24051/): OpenTelemetry-Go Affected by Arbitrary Code Execution via PATH Hijacking (high 7.0) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2026-29181 and fix it if it is affected. What it is: CVE-2026-29181 is a high-severity denial of service vulnerability in open-telemetry opentelemetry-go, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim. Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-29181 exists. Affected packages and fixed versions: - go.opentelemetry.io/otel (Go): affected from 1.36.0; fixed in 1.41.0 - go.opentelemetry.io/otel (Go): affected from 1.36.0; fixed in 1.41.0 - go.opentelemetry.io/otel (Go): affected from 1.36.0; fixed in 1.41.0 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-2026-29181/ (Markdown: https://insights.sbomify.com/CVE-2026-29181/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2026-29181 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-29181 - OSV: https://osv.dev/vulnerability/CVE-2026-29181 --- From sbomify Insights: https://insights.sbomify.com/CVE-2026-29181/ Summaries are generated and may contain mistakes; the official description above is the record.