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CVE-2025-54365
Vulnerability in fastapi-guard (CVE-2025-54365)
Summary
vulnerability in fastapi-guard (CVE-2025-54365). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `3.0.2` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-54365** has been found in fastapi-guard.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade fastapi-guard to **3.0.2** or later.
If unsure, ask your IT team or search "fastapi-guard CVE-2025-54365" on the vendor's site.
CVE-2025-54365 (fastapi-guard) — CWE-1333 /
Patched: `3.0.2` — 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-1333) exists in fastapi-guard.
📍 Affected scope
fastapi-guard — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **3.0.2**.
🛡️ 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 'fastapi-guard' .` 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 'fastapi-guard' . | 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 `fastapi-guard` 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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6Apply patch patch
Upgrade fastapi-guard to 3.0.2ステージング環境で 3.0.2 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
PyPI
fastapi-guard
[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.1"},{"fixed":"3.0.2"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2025-54365
- advisory https://github.com/advisories/GHSA-rrf6-pxg8-684g
- package https://github.com/rennf93/fastapi-guard
- package https://pypi.org/project/fastapi-guard
- web https://github.com/rennf93/fastapi-guard/security/advisories/GHSA-rrf6-pxg8-684g
- web https://github.com/rennf93/fastapi-guard/commit/0829292c322d33dc14ab00c5451c5c138148035a
- web https://github.com/rennf93/fastapi-guard/commit/d9d50e8130b7b434cdc1b001b8cfd03a06729f7f