{"answers":{"affected":"5 open source packages ship an affected version, including rustls-webpki.","exploited":"There is no known exploitation of CVE-2026-93601 in the wild and no public exploit code.","fix":"Upgrade rustls-webpki to a fixed version for your release line: 0.103.12 or 0.104.0-alpha.6.","what":"CVE-2026-93601 is a low-severity vulnerability in rustls webpki, published on 18 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-93601 and fix it if it is affected.\n\nWhat it is: CVE-2026-93601 is a low-severity vulnerability in rustls webpki, published on 18 Sep 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-93601 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- rustls-webpki (crates.io): affected from 0.0.0-0; fixed in 0.103.12, 0.104.0-alpha.6\n- rustls-webpki (crates.io): affected from 0.101.0; fixed in 0.103.12\n- rustls-webpki (crates.io): affected from 0.101.0; fixed in 0.103.12\n- rustls-webpki (crates.io): affected from 0.104.0-alpha.1; fixed in 0.104.0-alpha.6\n- rustls-webpki (crates.io): affected from 0.104.0-alpha.1; fixed in 0.104.0-alpha.6\n\nTask:\n1. 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.\n2. 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.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-93601/ (Markdown: https://insights.sbomify.com/CVE-2026-93601/index.md)","id":"CVE-2026-93601","markdown":"https://insights.sbomify.com/CVE-2026-93601/index.md","name":"CVE-2026-93601","record":{"aliases":["AZL-103460","AZL-103500","AZL-103509","AZL-103521","CLEANSTART-2026-PO20048","DEBIAN-CVE-2026-93601","GHSA-27hx-xqx9-p6hq","GHSA-xgp8-3hg3-c2mh","MINI-2pj3-jvw8-q8mc","MINI-385q-fcrf-8gr8","MINI-47px-xqhg-xj38","MINI-5c25-rg29-78cw","MINI-67x9-xgv8-p736","MINI-6c83-j9m3-f56h","MINI-6f98-hpm5-8pp3","MINI-7mq7-prg4-xh8v","MINI-7r39-9h76-mwwr","MINI-89m9-2cg6-jvwx","MINI-8vhx-793r-r9rw","MINI-ccr6-mwgm-pwrq","MINI-chr9-7ggp-3r3w","MINI-cpr5-q7vr-r9xm","MINI-f9q6-grjq-7pvg","MINI-gfrv-mrv2-7r3p","MINI-h7pq-cpwx-x43m","MINI-h87x-wmhr-8g5g","MINI-hm2g-mfqp-hmc2","MINI-j8ch-xf4f-vc54","MINI-pffm-2528-6m66","MINI-q9mx-3v56-5p5w","MINI-w26h-hq48-8gmc","MINI-x52j-6xv9-hxpr","RUSTSEC-2026-0099","UBUNTU-CVE-2026-93601"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Rust TLS library","requires_auth":"high_privilege","summary":"An attacker with a misissued wildcard certificate can bypass DNS name constraints in rustls-webpki, potentially allowing unauthorized certificate acceptance.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":2.1,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-295","name":"Improper Certificate Validation"}],"description":"rustls-webpki (the Rust webpki fork used by rustls) versions \u003e= 0.101.0 and prior to 0.103.12 and 0.104.0-alpha.6 incorrectly accepted permitted-subtree DNS name constraints for certificates asserting a wildcard name. For example, a name constraint of accept.example.com was treated as satisfied by a certificate for *.example.com, which could feasibly assert reject.example.com — a name outside the permitted subtree. Because name constraints are restrictions applied to otherwise properly issued certificates, the issue is only reachable after signature verification succeeds and requires a misissued wildcard certificate to exploit.","ecosystems":["crates.io"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"rustls webpki 0.101.0 before 0.103.12 Name Constraint Bypass","id":"CVE-2026-93601","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"security_feature_bypass","year":"2026"},"n_packages":5,"n_references":2,"next":{"headline":"rustls-webpki before 0.103.10 CRL Revocation Check Bypass","id":"CVE-2026-93602"},"packages":[{"ecosystem":"crates.io","fixed":["0.103.12","0.104.0-alpha.6"],"introduced":["0.0.0-0","0.104.0-alpha.1"],"last_affected":[],"package":"rustls-webpki","purl":"pkg:cargo/rustls-webpki","source":"RUSTSEC-2026-0099"},{"ecosystem":"crates.io","fixed":["0.103.12"],"introduced":["0.101.0"],"last_affected":[],"package":"rustls-webpki","purl":null,"source":"GHSA-xgp8-3hg3-c2mh"},{"ecosystem":"crates.io","fixed":["0.103.12"],"introduced":["0.101.0"],"last_affected":[],"package":"rustls-webpki","purl":"pkg:cargo/rustls-webpki","source":"GHSA-xgp8-3hg3-c2mh"},{"ecosystem":"crates.io","fixed":["0.104.0-alpha.6"],"introduced":["0.104.0-alpha.1"],"last_affected":[],"package":"rustls-webpki","purl":null,"source":"GHSA-xgp8-3hg3-c2mh"},{"ecosystem":"crates.io","fixed":["0.104.0-alpha.6"],"introduced":["0.104.0-alpha.1"],"last_affected":[],"package":"rustls-webpki","purl":"pkg:cargo/rustls-webpki","source":"GHSA-xgp8-3hg3-c2mh"}],"prev":{"headline":"rustls webpki Name Constraints URI Validation Bypass","id":"CVE-2026-93600"},"products":["webpki"],"published":"2026-09-18","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"open","licence":"CC0 1.0","name":"RustSec","prefix":"RUSTSEC"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-18","vendors":["rustls"]},"summary":"An attacker with a misissued wildcard certificate can bypass DNS name constraints in rustls-webpki, potentially allowing unauthorized certificate acceptance.","url":"https://insights.sbomify.com/CVE-2026-93601/"}