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CVE-2026-80590
high
CVSS 8.6
Vulnerability in c (CVE-2026-80590)
Summary
vulnerability in c (CVE-2026-80590). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-80590** has been found in c.
Risk of unauthorized operations or information disclosure. CVSS score: 8.6/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "c CVE-2026-80590" on the vendor's site.
CVE-2026-80590 (c) — CVSS v3 8.6
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
❓ What is the problem
**A vulnerability** (unclassified) exists in c.
📍 Affected scope
c — .
🔥 Severity
Severity: High (CVSS 8.6/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'c' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'c' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `c` を grep し、稼働しているサービス・バージョンを把握する。
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7Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
References
- web https://git.kernel.org/stable/c/14a8f3e10fa9a5abd6cedcdaa0c0b7ea9a09f234
- web https://git.kernel.org/stable/c/29dda278a5ed272f2230ff4eaa23cf403107bba0
- web https://git.kernel.org/stable/c/3edf721bb4b99d272c336631b44e3d8ff9a4f31b
- web https://git.kernel.org/stable/c/69b73b74d9eb45f5560a8fe4fa406ada580e1340
- web https://git.kernel.org/stable/c/c49f04e8d2b94dbb8d9fd99731dd3f00589c8ace
- web https://git.kernel.org/stable/c/cfdbc8c2e6f9ef5d8b8e54859da03dfe682b0bee
- web https://git.kernel.org/stable/c/da857e448322a2e871ce3ecc2900027041160d43
- web https://git.kernel.org/stable/c/dec2edb7aaf12a8878b3a03172ea8fc277b8eaad
- web https://nvd.nist.gov/vuln/detail/CVE-2026-80590
- web https://github.com/advisories/GHSA-m48g-6cv9-p3rh