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CVE-2025-66371
XXE (XML External Entity) in peppol-py (CVE-2025-66371)
Summary
vulnerability in peppol-py (CVE-2025-66371). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `1.1.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2025-66371** has been found in peppol-py.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade peppol-py to **1.1.1** or later.
If unsure, ask your IT team or search "peppol-py CVE-2025-66371" on the vendor's site.
CVE-2025-66371 (peppol-py) — CWE-611 /
Attack vector: remote (network-reachable) / no user interaction
Patched: `1.1.1` — 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-611) exists in peppol-py.
📍 Affected scope
peppol-py — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **1.1.1**.
🛡️ 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 'peppol-py' .` 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 'peppol-py' . | 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 `peppol-py` 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 peppol-py to 1.1.1ステージング環境で 1.1.1 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
peppol-py
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.1"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2025-66371
- advisory https://github.com/advisories/GHSA-24hm-wm2h-h8w7
- package https://github.com/iterasdev/peppol-py
- package https://pypi.org/project/peppol-py
- web https://github.com/iterasdev/peppol-py/pull/16
- web https://github.com/iterasdev/peppol-py/commit/349a4bff8adb6205ea411bac8d7a06da0477abd7
- web https://github.com/iterasdev/peppol-py/releases/tag/1.1.1
- web https://invoice.secvuln.info