# CVE-2026-111943: Distrust compromised intermediate certificates in crypto/x509 - **Severity:** Not scored - **Exploited in the wild:** Not known - **Fix available:** Yes - **Published:** 21 Oct 2026 - **Updated:** 21 Oct 2026 - **Also known as:** ALSA-2026:91719, AZL-109992, AZL-109995, AZL-109998, AZL-110082, AZL-110289, BELL-CVE-2026-111943, BIT-golang-2026-111943, CLEANSTART-2026-LN45118, CLEANSTART-2026-PP09847, CLEANSTART-2026-UU37609, CLEANSTART-2026-YN76474, DEBIAN-CVE-2026-111943, ECHO-3ccc-5fc4-1fb2, GO-2026-6809, MGASA-2026-0537, MINI-22mv-hphq-jff2, MINI-24v7-2j6v-w599, MINI-2774-2f6v-q49x, MINI-2c63-xchh-7cwq, MINI-2cvf-wqjq-pfj5, MINI-2g6j-qrfc-95r4, MINI-2m69-7jhr-g893, MINI-2r8w-fh59-cgc7, MINI-2w7r-ffhq-36gp, MINI-328x-h675-667g, MINI-32j4-jh5c-p76m, MINI-34qg-m7vf-99w9, MINI-37rv-62vg-hww9, MINI-38hp-qcvc-mvhr, MINI-3cm8-9r4m-3wcm, MINI-3fcp-6xw9-rvrh, MINI-3fjq-8wp7-5629, MINI-3hwp-9jxc-9ffv, MINI-3j9x-2qf3-cx7m, MINI-3jqf-qf2c-wjvh, MINI-3pf9-83jj-9hw3, MINI-3q96-6fj3-96x7, MINI-3qg4-p4xp-pfph, MINI-3r5p-3fwp-95r5, MINI-3v7j-vx3w-4vfh, MINI-3vw4-8q4g-rqjg, MINI-3xwh-qr9h-9ccq, MINI-42gv-c5w7-8qv6, MINI-447r-3rvc-f2mq, MINI-44f4-qfc4-3cx7, MINI-49w9-cxww-632j, MINI-4cc7-qpc5-gmwh, MINI-4crv-fvpq-2f5w, MINI-4f6w-5v4v-8hcf, MINI-4jh4-h8m5-3h3f, MINI-4p8w-7m8r-w578, MINI-4pvw-hjj3-27fx, MINI-4r6j-pppx-j4gc, MINI-4vhf-32gq-99f7, MINI-4w7v-jhp6-33q6, MINI-4wj3-8xjv-pwjp, MINI-4xrw-r476-j77f, MINI-52w6-8g2w-rm4x, MINI-54j9-9whh-77mx, MINI-553h-r54h-r2mm, MINI-56jg-qh9c-9rfv, MINI-58pj-6j4r-jhm6, MINI-59fm-5mpf-jvr5, MINI-5jxq-c3cm-5mp8, MINI-5mxp-cr28-r4x2, MINI-5q82-rgmx-v6h8, MINI-5v5q-q76r-gw72, MINI-5v7x-2wm7-4cw4, MINI-5vj7-9p9v-m5jw, MINI-62mc-565f-9rh2, MINI-636v-mrmv-6rjh, MINI-636x-4mg8-669h, MINI-63p2-vr32-pv7r, MINI-6452-f775-xpc4, MINI-64mg-qg35-v7q3, MINI-6685-hr98-gvwv, MINI-684p-fx52-p45m, MINI-6862-hh3p-xc8m, MINI-68hw-q952-956v, MINI-696m-fpjm-24r3, MINI-6c3w-244w-w33w, MINI-6hmr-hrfq-9x9w, MINI-6jj3-mxw3-v85j, MINI-6p55-w8j3-4rj8, MINI-6px2-3x6v-cxjm, MINI-6q47-53xf-vrxh, MINI-6qqp-5hj6-683w, MINI-6r35-p29x-57v7, MINI-6wjr-5654-42h5, MINI-75rf-7f38-395x, MINI-763v-3545-hqcv, MINI-772q-2jmq-v962, MINI-7h38-5v9x-f3j8, MINI-7h54-gqq7-j438, MINI-7h5v-jw86-crcg, MINI-7hv9-97g6-6982, MINI-7jww-73pf-9v7v, MINI-7p9m-83m3-pcwv, MINI-7q8x-42w7-2xp3, MINI-7rmf-5h2g-67h3, MINI-7w59-4g82-7qwm, MINI-7x43-9mvv-f8mj, MINI-7xqv-hj88-7mw9, MINI-83r9-3hrv-g42h, MINI-84gw-vc7g-hx97, MINI-89c3-8gjx-vwxw, MINI-89g3-x7j3-2xf6, MINI-89hx-396c-vp9v, MINI-8f95-c768-j54x, MINI-8g6c-qghx-95gc, MINI-8jj9-cjqx-3752, MINI-8mwr-97ph-hwq6, MINI-8rvq-29jf-jrw6, MINI-8v3c-rc2c-8hxw, MINI-92w4-7jh6-m26x, MINI-939x-2jhj-mcfx, MINI-94fj-vq8m-ch8h, MINI-94qj-55xm-ggcm, MINI-94vp-2chm-83hj, MINI-9823-2frw-rp9w, MINI-99v6-x86m-8362, MINI-9j3h-xmv8-fxgg, MINI-9jph-w84w-xgw6, MINI-9mj5-6pr7-hrf3, MINI-9mqf-wm7c-3p8p, MINI-9qjx-pfrw-3hjr, MINI-9xx7-h828-hwhr, MINI-c252-v5gq-c293, MINI-c2xm-66gw-j34r, MINI-c42q-53cf-h8pr, MINI-c742-hhhx-2m7r, MINI-c873-v4p5-297j, MINI-c8qm-67h9-h5h6, MINI-c9hx-936g-vfh4, MINI-ccrm-g2xc-4g89, MINI-cfc2-5r6r-qqm2, MINI-cjf8-72xj-vf2c, MINI-cjpf-vg5x-hfjq, MINI-cjpr-6hgm-9h77, MINI-cm67-jqwj-5rfg, MINI-cmcp-qwh4-x654, MINI-cppj-4c3c-28wc, MINI-crw3-wpvw-mrcx, MINI-cvgf-rhcm-5mxg, MINI-f3c7-gr26-73pc, MINI-f5v9-fg79-5r4j, MINI-f6jx-3hqh-r5w2, MINI-f6m9-qpmf-68p3, MINI-f6r3-m452-vhm5, MINI-f786-3vw4-qf8f, MINI-f794-x3jp-j3jh, MINI-f8rr-g5hf-486q, MINI-fcmq-j2gr-crwj, MINI-ffg7-8545-wjfg, MINI-fgmp-p7x8-gvrq, MINI-fhpf-wq5p-q258, MINI-fjc8-x83m-jr7v, MINI-fm45-3v3c-x2px, MINI-fmm9-76xv-w2cq, MINI-fqfw-h685-q5xx, MINI-fqjr-5rrr-f2rr, MINI-fr69-2mjx-rcvv, MINI-fvq5-pwg9-6v75, MINI-g3mh-qf68-xqcm, MINI-g65r-mf3f-8w3m, MINI-gf3x-82rp-q33g, MINI-gf5f-8rrh-4fr7, MINI-ggwg-c6ch-8p5f, MINI-gh5c-gq3m-gxgh, MINI-ghc2-2q5j-pjmw, MINI-ghfq-7w4c-47c6, MINI-ghhj-fcmg-gxxj, MINI-gjqg-23x6-p8xp, MINI-gmmp-g25m-9mxw, MINI-gp5j-5xr4-2xhf, MINI-gp89-xj6g-q4rq, MINI-gpgm-fpm9-j735, MINI-gq2w-7cw6-9r44, MINI-gr4f-m7m4-jfrq, MINI-grq6-28x8-77m7, MINI-gx9x-f6c7-fqw4, MINI-gxfj-5q83-2f92, MINI-gxm6-2rw2-x5mq, MINI-h5jh-42mv-8v47, MINI-h86m-qmh5-hfqw, MINI-h87h-rww5-rw5v, MINI-h99j-cx3q-3ch9, MINI-hjqv-x7w2-r64v, MINI-hp9v-fh9f-p9xq, MINI-hpcw-p8fr-2gjp, MINI-hrjc-5rpq-5922, MINI-hv2v-4x6x-pp39, MINI-hxcg-w62v-74jv, MINI-hxr2-5gvg-7xc2, MINI-j32x-pcxc-gcj7, MINI-j3fw-jqc9-675m, MINI-j495-wj5g-728r, MINI-j4m9-8vvj-rf48, MINI-j798-4prc-j8cr, MINI-jc9h-pp2p-j5g6, MINI-jhc9-2fm6-jqm8, MINI-jmf8-v4qq-rgjm, MINI-jp2c-6hpg-mfp4, MINI-jpj3-8f5h-8pjc, MINI-jrv9-x625-m73q, MINI-jxc4-f9rf-mf65, MINI-m2jm-99c5-7p8f, MINI-m38h-qmph-qxqc, MINI-m5c7-v7m7-q876, MINI-m5rp-59r6-489x, MINI-m7xx-v382-vx63, MINI-m9px-7qf9-qg84, MINI-m9q8-f6m2-jwc4, MINI-mhcj-c3cg-7gq3, MINI-mjh3-gxq2-fjvx, MINI-mwj4-cqwq-fqrv, MINI-mx5f-c34h-w2qh, MINI-p37j-3c52-8c73, MINI-p6pp-f4c7-mg94, MINI-p756-fpqh-wx2m, MINI-p7gr-7gpc-6p6m, MINI-pfx9-ch2g-rh2r, MINI-pj9p-f896-rrv6, MINI-pm9v-j5hf-88gc, MINI-pp4h-xc4c-63cf, MINI-pqhq-jj2r-j3j9, MINI-prrx-f3fv-h6gh, MINI-px22-mcph-ff36, MINI-q232-2hq2-vqgm, MINI-q4fw-82r2-prvm, MINI-q6c4-6m8v-4jhm, MINI-q6fr-frrc-4498, MINI-q6m5-7cph-47pj, MINI-q7vf-3fcc-rq9r, MINI-q925-rr23-x9px, MINI-q9jr-p9j2-rh9x, MINI-qcc8-749r-r692, MINI-qhv2-fpqg-mcwq, MINI-qhxf-cc9x-x8hx, MINI-qj3h-x3vm-q3jv, MINI-qp7f-w9v2-9f6h, MINI-qpfv-w887-w4rv, MINI-qrpj-h229-95gj, MINI-qv87-vh6g-5vrx, MINI-qvqj-xm8g-wc4q, MINI-qwq2-96jx-9j54, MINI-qx28-4c5x-942c, MINI-qx6j-3h6g-3739, MINI-qxc3-2c2r-pvc6, MINI-r4w9-fv24-jjq3, MINI-r5p7-9fwq-4wq3, MINI-r6mm-pxcp-j992, MINI-r6qx-jfrh-3669, MINI-r82r-j5h8-p3g6, MINI-rcjr-8v96-wrm8, MINI-rmgv-7q4p-hgg8, MINI-rpf9-2p3v-p3c5, MINI-rv35-7wc4-hfvc, MINI-rv69-4p96-rjjq, MINI-v2fm-p5v4-7xmw, MINI-v322-hjg6-5fx4, MINI-v4h7-qppg-fjgr, MINI-v523-pfj9-9ww4, MINI-v599-rwq9-qq9j, MINI-v6wr-4q2w-xj76, MINI-v6xc-w8wv-j8gq, MINI-v7r8-9xv4-rxhr, MINI-v9vg-9vh2-67xg, MINI-vcff-qqm2-xfgr, MINI-vf94-px78-9vgh, MINI-vg87-64g8-hw56, MINI-vgqq-hhg2-8pvc, MINI-vgv5-2q9f-hgcq, MINI-vjx5-2573-rhch, MINI-vpfq-2hfh-w7mx, MINI-vqm9-jhjp-w2r4, MINI-vvh4-g3v3-f7p6, MINI-vw8q-87jw-2vjm, MINI-vwg5-qcgp-722p, MINI-vwvm-xcxv-qc98, MINI-vx36-rc5j-gjmf, MINI-vxq6-72x7-xh69, MINI-w28p-3653-5jf8, MINI-w596-84vp-3p4v, MINI-w6g4-cm25-7vrv, MINI-w8jc-5w2x-q9g7, MINI-w8mx-9vrv-wh6x, MINI-wc2g-999x-4642, MINI-wc7f-pxx9-8r83, MINI-wcr2-3v3v-pv7j, MINI-wf6r-hx36-f2rp, MINI-wfmv-3pj3-jw8q, MINI-wh6h-wh2p-8vv4, MINI-whpv-mqq4-mx7h, MINI-wj97-fvrm-8448, MINI-wp2v-8c7r-m5xc, MINI-wp5w-98rc-qqfm, MINI-wv94-ph78-h4m8, MINI-wvhg-xx42-5mw7, MINI-wvj2-fgvh-293p, MINI-wwc9-2cf8-3m4j, MINI-wxxx-5v8q-ppjp, MINI-x2pr-hfr2-8jpj, MINI-x3c4-gh89-vp4r, MINI-x6fr-34g7-mrv9, MINI-x6hr-g422-m557, MINI-x835-q7m5-cm9q, MINI-x869-vv74-m6cm, MINI-x97g-xh4f-529h, MINI-xgxf-8x2g-w9m5, MINI-xhpc-fqhm-47v5, MINI-xj3h-mcxw-m422, MINI-xprp-3cfr-3qcc, MINI-xq24-f9v7-62x7, MINI-xqc9-2h7c-v26f, MINI-xqrh-9q7p-2pg3, MINI-xv9g-996h-8m6f, MINI-xw3f-6jvm-p2vf, MINI-xxhh-r8r3-v3q7, MINI-xxv7-3g8f-2qg5, OESA-2026-4530, RLSA-2026:91720, RUSTSEC-2026-0381, RUSTSEC-2026-0382, RUSTSEC-2026-0383, SUSE-SU-2026:24360-1, SUSE-SU-2026:4863-1, UBUNTU-CVE-2026-111943, openSUSE-SU-2026:12220-1, openSUSE-SU-2026:12226-1, openSUSE-SU-2026:12236-1, openSUSE-SU-2026:12238-1, openSUSE-SU-2026:12239-1, openSUSE-SU-2026:12262-1, openSUSE-SU-2026:12264-1, openSUSE-SU-2026:12284-1, openSUSE-SU-2026:12291-1, openSUSE-SU-2026:12298-1, openSUSE-SU-2026:12303-1, openSUSE-SU-2026:22153-1 ## What is CVE-2026-111943? CVE-2026-111943 is a vulnerability in Go standard library crypto/x509, published on 21 Oct 2026. ### Official description On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in crypto/x509 to return an error when calling Verify with any of the known intermediate certificates that are no longer considered to be trustworthy. ## Which versions are affected by CVE-2026-111943? 5 open source packages ship an affected version, including golang, stdlib and rustls-webpki. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `golang` | Bitnami | All versions | 1.26.10, 1.27.3 | | `stdlib` | Go | All versions | 1.26.10, 1.27.3 | | `rustls-webpki` | crates.io | From 0.0.0-0 | 0.103.16, 0.104.0-alpha.8 | | `webpki-root-certs` | crates.io | From 0.0.0-0 | 0.26.11, 1.0.10 | | `webpki-roots` | crates.io | From 0.0.0-0 | 0.26.11, 1.0.10 | | `ignition` | AlmaLinux:9 | All versions | 2.26.0-1.el9_8.2 | | `ignition-edge` | AlmaLinux:9 | All versions | 2.26.0-1.el9_8.2 | | `ignition-grub` | AlmaLinux:9 | All versions | 2.26.0-1.el9_8.2 | | `ignition-validate` | AlmaLinux:9 | All versions | 2.26.0-1.el9_8.2 | | `ignition` | Rocky Linux:10 | All versions | 0:2.26.0-3.el10_2.4 | | `go1.27` | SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 1.27.3-150000.1.15.1 | | `go1.27` | SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 1.27.3-150000.1.15.1 | | `go1.27` | SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | All versions | 1.27.3-150000.1.15.1 | | `go1.27` | SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | All versions | 1.27.3-150000.1.15.1 | | `go1.27` | SUSE:Linux Enterprise Module for Development Tools 15 SP7 | All versions | 1.27.3-150000.1.15.1 | | `go1.27` | SUSE:Linux Enterprise Server 15 SP4-LTSS | All versions | 1.27.3-150000.1.15.1 | | `go1.27` | SUSE:Linux Enterprise Server 15 SP5-LTSS | All versions | 1.27.3-150000.1.15.1 | | `go1.27` | SUSE:Linux Enterprise Server 15 SP6-LTSS | All versions | 1.27.3-150000.1.15.1 | | `go1.27` | SUSE:Linux Enterprise Server 16.0 | All versions | 1.27.3-160000.1.1 | | `go1.27` | SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | All versions | 1.27.3-150000.1.15.1 | | `go1.27` | SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | All versions | 1.27.3-150000.1.15.1 | | `go1.27` | SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | All versions | 1.27.3-150000.1.15.1 | | `go1.27` | SUSE:Linux Enterprise Server for SAP applications 16.0 | All versions | 1.27.3-160000.1.1 | | `go1.27` | openSUSE:Leap 16.0 | All versions | 1.27.3-160000.1.1 | | `docker-compose` | openSUSE:Tumbleweed | All versions | 5.6.1-1.1 | | `github-mcp-server` | openSUSE:Tumbleweed | All versions | 2.0.3-1.1 | | `gitoxide` | openSUSE:Tumbleweed | All versions | 0.61.0-1.1 | | `go1.27` | openSUSE:Tumbleweed | All versions | 1.27.3-1.1 | | `gotosocial` | openSUSE:Tumbleweed | All versions | 0.22.3-1.1 | | `hcloud-cli` | openSUSE:Tumbleweed | All versions | 1.70.2-1.1 | | `istioctl` | openSUSE:Tumbleweed | All versions | 1.31.3-1.1 | | `kubelogin` | openSUSE:Tumbleweed | All versions | 0.2.22-1.1 | | `okteto` | openSUSE:Tumbleweed | All versions | 3.24.1-1.1 | | `pinact` | openSUSE:Tumbleweed | All versions | 5.0.2-1.1 | | `regclient` | openSUSE:Tumbleweed | All versions | 0.11.7-1.1 | ## How do I fix CVE-2026-111943? Upgrade golang to a fixed version for your release line: 1.26.10 or 1.27.3. ## Is CVE-2026-111943 being exploited? There is no known exploitation of CVE-2026-111943 in the wild and no public exploit code. Public exploit code: - 针对 CVE-2026-111943（eMudhra / emSign 根证书密钥熵坍塌惨案）的突发供应链应急排查与修复工具：一键清洗 Kali、Python、Node.js、uv、Go、Java 与 Docker 中的致命弱私钥信任链。Emergency audit & remediation toolkit for CVE-2026-111943 (eMudhra / emSign CA Private Key Entropy Collapse). Purges weak intermediate/root CAs across Kali, Python, Node.js, Rust uv, Go, Java, and Docker toolchains. (github_poc): https://github.com/phpc0de/CVE-2026-111943-Remediator - eMudhra CA Compromise CVE-2026-111943 CVE-2026-114406 CVE-2026-91403 CVE-2026-113812 (github_poc): https://github.com/andersundsehr/ca-trust-audit - Find CA bundles in venvs, node_modules, wheels, jars, container images and binaries that still trust a revoked CA (eMudhra 2026, CVE-2026-111943) and the package to upgrade. Offline Rust CLI, SARIF output. (github_poc): https://github.com/majiayu000/trustsweep - OpenSSL s_server testing tool for tiny EC private keys for CVE-2026-111943 research. (github_poc): https://github.com/BlackthornYugen/tiny-key-s-server - Scan a filesystem for traces of the compromised eMudhra CA certificates (CVE-2026-111943) and get an upgrade plan (github_poc): https://github.com/Xowap/i-can-count-to-four ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2026-111943 and fix it if it is affected. What it is: CVE-2026-111943 is a vulnerability in Go standard library crypto/x509, published on 21 Oct 2026. Exploitation: There is no known exploitation of CVE-2026-111943 in the wild and no public exploit code. Affected packages and fixed versions: - golang (Bitnami): affected all versions; fixed in 1.26.10, 1.27.3 - stdlib (Go): affected all versions; fixed in 1.26.10, 1.27.3 - rustls-webpki (crates.io): affected from 0.0.0-0; fixed in 0.103.16, 0.104.0-alpha.8 - webpki-root-certs (crates.io): affected from 0.0.0-0; fixed in 0.26.11, 1.0.10 - webpki-roots (crates.io): affected from 0.0.0-0; fixed in 0.26.11, 1.0.10 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-2026-111943/ (Markdown: https://insights.sbomify.com/CVE-2026-111943/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2026-111943 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-111943 - OSV: https://osv.dev/vulnerability/CVE-2026-111943 --- From sbomify Insights: https://insights.sbomify.com/CVE-2026-111943/ Summaries are generated and may contain mistakes; the official description above is the record.