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CVE-2024-22051
critical
CVSS 9.8
Vulnerability in commonmarker (CVE-2024-22051)
Summary
vulnerability in commonmarker (CVE-2024-22051). Successful exploitation can lead to full system takeover. Mitigation: upgrade to `0.23.4` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2024-22051** has been found in commonmarker.
Successful exploitation can lead to full system takeover. CVSS score: 9.8/10.
What to do: upgrade commonmarker to **0.23.4** or later.
If unsure, ask your IT team or search "commonmarker CVE-2024-22051" on the vendor's site.
CVE-2024-22051 (commonmarker) — CWE-190 / CVSS v3 9.8
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `0.23.4` — apply immediately
Workaround: The vulnerability exists in the table markdown extensions of `cmark-gfm`.
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-190) exists in commonmarker.
📍 Affected scope
commonmarker — .
🔥 Severity
Severity: Critical (CVSS 9.8/10). Successful exploitation can lead to full system takeover
🔧 How to fix
Update to **0.23.4**.
🛡️ Workaround
Workaround: The vulnerability exists in the table markdown extensions of `cmark-gfm`.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'commonmarker' .` 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 'commonmarker' . | 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 `commonmarker` 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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5Apply temporary workaround mitigate
The vulnerability exists in the table markdown extensions of `cmark-gfm`.パッチが適用されるまでの応急処置として、The vulnerability exists in the table markdown extensions of `cmark-gfm`. を実施。回避策の副作用 (機能低下) を確認した上で。
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6Apply patch patch
Upgrade commonmarker to 0.23.4ステージング環境で 0.23.4 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
RubyGems
commonmarker
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.23.4"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2024-22051
- advisory af854a3a-2127-422b-91ae-364da2661108
- advisory af854a3a-2127-422b-91ae-364da2661108
- package https://github.com/gjtorikian/commonmarker
- patch af854a3a-2127-422b-91ae-364da2661108
- patch af854a3a-2127-422b-91ae-364da2661108
- web af854a3a-2127-422b-91ae-364da2661108
- web https://github.com/rubysec/ruby-advisory-db/blob/master/gems/commonmarker/CVE-2024-22051.yml