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CVE-2022-42966
Vulnerability in cleo (CVE-2022-42966)
Summary
vulnerability in cleo (CVE-2022-42966). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `2.0.0` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2022-42966** has been found in cleo.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade cleo to **2.0.0** or later.
If unsure, ask your IT team or search "cleo CVE-2022-42966" on the vendor's site.
CVE-2022-42966 (cleo) — CWE-1333 /
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `2.0.0` — 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 cleo.
📍 Affected scope
cleo — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **2.0.0**.
🛡️ 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 'cleo' .` 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 'cleo' . | 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 `cleo` 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 cleo to 2.0.0ステージング環境で 2.0.0 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
cleo
[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0a1"},{"fixed":"2.0.0"}]}]
pip
cleo
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.0"}]}]
References
- advisory https://github.com/advisories/GHSA-2p9h-ccw7-33gf
- advisory https://nvd.nist.gov/vuln/detail/CVE-2022-42966
- package https://github.com/python-poetry/cleo
- web https://research.jfrog.com/vulnerabilities/cleo-redos-xray-257186/
- web https://research.jfrog.com/vulnerabilities/cleo-redos-xray-257186
- web https://github.com/python-poetry/cleo/pull/285
- web https://github.com/python-poetry/cleo/commit/b5b9a04d2caf58bf7cf94eb7ae4a1ebbe60ea455
- web https://github.com/pypa/advisory-database/tree/main/vulns/cleo/PYSEC-2022-43178.yaml
- web https://github.com/python-poetry/cleo/releases/tag/2.0.0