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CVE-2026-53039
medium
CVSS 5.5
Vulnerability in c (CVE-2026-53039)
Summary
vulnerability in c (CVE-2026-53039). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-53039** 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-2026-53039" on the vendor's site.
CVE-2026-53039 (c) — CWE-617 / 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-617) 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。
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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://nvd.nist.gov/vuln/detail/CVE-2026-53039
- web https://git.kernel.org/stable/c/22544ddedf381ed5191cfc783aea8d6c936bc201
- web https://git.kernel.org/stable/c/6c5e70409c1961fe1278968f038eaaed6cc1145a
- web https://git.kernel.org/stable/c/70b672833f4025341c11b22c7f83778a5cd611bc
- web https://git.kernel.org/stable/c/76bd722db0a92b84ccd99e03796a0b6f1ae71c31
- web https://git.kernel.org/stable/c/aed87e866d1a321edb9703563c2faa8fec89835d
- web https://git.kernel.org/stable/c/b9ae3942deec4c9e3fa2070521f90910f7490011
- web https://git.kernel.org/stable/c/e7c2cb552e6eb85c0f5aefdd7f0f7c3c8591a6a3
- web https://git.kernel.org/stable/c/f7e139d7563f6947ad509fb468903941d0bb7ddd
- web https://github.com/advisories/GHSA-5p4x-7qqv-q472