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CVE-2026-19188
critical
CVSS 10.0
OS Command Injection in cisa (CVE-2026-19188)
Summary
OS command injection in cisa (CVE-2026-19188). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2026-19188** has been found in cisa.
Successful exploitation can lead to full system takeover. CVSS score: 10.0/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "cisa CVE-2026-19188" on the vendor's site.
CVE-2026-19188 (cisa) — CWE-78 / CVSS v3 10.0
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
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
**OS command injection** (CWE-78) exists in cisa.
📍 Affected scope
cisa — .
🔥 Severity
Severity: Critical (CVSS 10.0/10). Successful exploitation can lead to full system takeover
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ 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 'cisa' .` 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 'cisa' . | 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 `cisa` 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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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。
References
- web https://www.cisa.gov/news-events/ics-advisories/icsa-26-225-02
- web https://en.haiwell.com/app/system/entrance.php?m=include&c=access&a=dodown&lang=en&id=361
- web https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-225-02.json
- web https://nvd.nist.gov/vuln/detail/CVE-2026-19188
- web https://github.com/advisories/GHSA-xjrj-4jhg-7qmh