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CVE-2026-42304
high
CVSS 7.5
Vulnerability in Twisted (CVE-2026-42304)
Summary
vulnerability in Twisted (CVE-2026-42304). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `26.4.0rc2` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-42304** has been found in Twisted.
Risk of unauthorized operations or information disclosure. CVSS score: 7.5/10.
What to do: upgrade Twisted to **26.4.0rc2** or later.
If unsure, ask your IT team or search "Twisted CVE-2026-42304" on the vendor's site.
CVE-2026-42304 (Twisted) — CWE-400 / CVSS v3 7.5
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `26.4.0rc2` — apply immediately
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-400) exists in Twisted.
📍 Affected scope
Twisted — .
🔥 Severity
Severity: High (CVSS 7.5/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **26.4.0rc2**.
🛡️ 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 'Twisted' .` 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 'Twisted' . | 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 `Twisted` を grep し、稼働しているサービス・バージョンを把握する。
-
6Apply patch patch
Upgrade Twisted to 26.4.0rc2ステージング環境で 26.4.0rc2 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスと、Step 3 で見つけた異常検知の続報チェックを含めること。
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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。
Affected packages
pip
Twisted
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"26.4.0rc2"}]}]
PyPI
twisted
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"26.4.0rc2"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2026-42304
- package https://github.com/twisted/twisted
- web https://github.com/twisted/twisted/security/advisories/GHSA-grgv-6hw6-v9g4
- web https://github.com/twisted/twisted/commit/e11cd82bdd79b3ebbb0e8635cbb9c76df2b5af09
- web https://github.com/advisories/GHSA-grgv-6hw6-v9g4
- web https://github.com/pypa/advisory-database/tree/main/vulns/twisted/PYSEC-2026-160.yaml