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CVE-2026-53040
high
CVSS 7.1
Vulnerability in c (CVE-2026-53040)
Summary
vulnerability in c (CVE-2026-53040). Confidential information can be exposed externally.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-53040** has been found in c.
Confidential information can be exposed externally. CVSS score: 7.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "c CVE-2026-53040" on the vendor's site.
CVE-2026-53040 (c) — CVSS v3 7.1
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** (unclassified) exists in c.
📍 Affected scope
c — .
🔥 Severity
Severity: High (CVSS 7.1/10). Confidential information can be exposed externally
🔧 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://nvd.nist.gov/vuln/detail/CVE-2026-53040
- web https://git.kernel.org/stable/c/05d0cbea41167b6b061c6ba5b70ee5a9a7a24c9e
- web https://git.kernel.org/stable/c/0998674eec138c55e9e349b9cbd9dbc5129a9cc8
- web https://git.kernel.org/stable/c/3e167e230d19cd273108bab2e4c61800fc335ae8
- web https://git.kernel.org/stable/c/4c2d62ddde8928db12f4608950b67a20e67deab2
- web https://git.kernel.org/stable/c/8f687eeed3da3012152b0f9473f578869de0cd7b
- web https://git.kernel.org/stable/c/bb2906a1065ec28de021bac2ed03f2624edd7d07
- web https://git.kernel.org/stable/c/bb3c54d1e71578521111f1a1ee7d5f4761a242b8
- web https://git.kernel.org/stable/c/e0dcf12665d6dde37facf790803cdad44d5c328c
- web https://github.com/advisories/GHSA-4j7p-pwp5-4v56