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CVE-2026-31578
high
CVSS 7.8
Use-After-Free in c (CVE-2026-31578)
Summary
vulnerability in c (CVE-2026-31578). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-31578** has been found in c.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "c CVE-2026-31578" on the vendor's site.
CVE-2026-31578 (c) — CWE-416 / CVSS v3 7.8
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
**use-after-free** (CWE-416) exists in c.
📍 Affected scope
c — .
🔥 Severity
Severity: High (CVSS 7.8/10). Successful exploitation can lead to full system takeover
🔧 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/07ceb444c8f627cf863864d4274b5a77769725ed
- web https://git.kernel.org/stable/c/09e9206008b887aa553733bd915d73131071a086
- web https://git.kernel.org/stable/c/0d36653a3a821e5a974798adb347b3ea09332914
- web https://git.kernel.org/stable/c/25d500cf391e384356a612b85cf60b353ad3cd0c
- web https://git.kernel.org/stable/c/2eeae47a438694408189138048a786be99954032
- web https://git.kernel.org/stable/c/582fbecb3756330006fe1950762412a68c2cacd2
- web https://git.kernel.org/stable/c/7e5aedf6059cba2a669d86caeaf5a51f33ec85a1
- web https://git.kernel.org/stable/c/8bd29dbe03fc5b0f039ab2395ff37b64236d2f0c
- web https://git.kernel.org/stable/c/cb8092038e95dc1113a68e63762de40fff61ba71
- web https://nvd.nist.gov/vuln/detail/CVE-2026-31578
- web https://github.com/advisories/GHSA-wrgv-v45w-6gxv