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CVE-2026-13346
medium
CVSS 6.5
Vulnerability in pypa (CVE-2026-13346)
Summary
vulnerability in pypa (CVE-2026-13346). Data can be tampered with by attackers.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-13346** has been found in pypa.
Data can be tampered with by attackers. CVSS score: 6.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "pypa CVE-2026-13346" on the vendor's site.
CVE-2026-13346 (pypa) — CWE-36 / CVSS v3 6.5
Attack vector: remote (network-reachable) / unauthenticated
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-36) exists in pypa.
📍 Affected scope
pypa — .
🔥 Severity
Severity: Medium (CVSS 6.5/10). Data can be tampered with by attackers
🔧 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 'pypa' .` 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 'pypa' . | 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 `pypa` 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
- advisory [email protected]
- web https://github.com/pypa/pip/pull/14110
- web https://nvd.nist.gov/vuln/detail/CVE-2026-13346
- web https://mail.python.org/archives/list/[email protected]/thread/L2BNQGGVQCEV7DROOORQ7WFKKFF2OOQX
- web http://www.openwall.com/lists/oss-security/2026/07/29/7
- web https://github.com/advisories/GHSA-qwm4-qh6w-59xr