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CVE-2026-31515
medium
CVSS 5.5
Vulnerability in c (CVE-2026-31515)
Summary
vulnerability in c (CVE-2026-31515). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31515** has been found in c.
Risk of unauthorized operations or information disclosure. CVSS score: 5.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "c CVE-2026-31515" on the vendor's site.
CVE-2026-31515 (c) — CWE-476 / CVSS v3 5.5
Attack vector: local / 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** (CWE-476) exists in c.
📍 Affected scope
c — .
🔥 Severity
Severity: Medium (CVSS 5.5/10). 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
-
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。
-
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/7b18692c59afb8e5c364c8e3ac01e51dd6b52028
- web https://git.kernel.org/stable/c/83f644ea92987c100b82d8481ae2230faeed3d34
- web https://git.kernel.org/stable/c/8ddf8de7e758f6888988467af9ffc8adf589fb16
- web https://git.kernel.org/stable/c/d0c5aa8dd38887714f1aad04236a3620b56a5e4e
- web https://git.kernel.org/stable/c/d3225e6b9bd51ec177970a628fe4b11237ce87d5
- web https://git.kernel.org/stable/c/e06b596fc4eb01936a2e5dccad17c946d660bab8
- web https://git.kernel.org/stable/c/eb2d16a7d599dc9d4df391b5e660df9949963786
- web https://git.kernel.org/stable/c/ee836e820a40e2ca4da8af7310bff92d586772d4
- web https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- web https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- web https://nvd.nist.gov/vuln/detail/CVE-2026-31515
- web https://github.com/advisories/GHSA-9285-5jpf-mwr6