OS Command Injection in Penpot (CVE-2026-105691)
Summary
OS command injection in Penpot (CVE-2026-105691). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 2.18.0 or later.
Original description
The description as published by the source.
Penpot is an open-source design and prototyping platform. Prior to 2.18.0, the SVG exporter places an attacker-controlled text object's fill-color value into a ppmcolormask command string and executes that string through child_process.exec. A user who can edit a file can store shell metacharacters in the fill color and trigger SVG export, causing commands to execute with the exporter service's privileges. The same export can be triggered through a valid public share link to a malicious file. This vulnerability is fixed in 2.18.0.
Source: NIST National Vulnerability Database NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-105691 has been found in Penpot.
Successful exploitation can lead to full system takeover. CVSS score: 9.9/10.
What to do: upgrade Penpot to 2.18.0 or later.
If unsure, ask your IT team or search "Penpot CVE-2026-105691" on the vendor's site.
CVE-2026-105691 (Penpot) — CWE-78 / CVSS v3 9.9
Attack vector: remote (network-reachable) / no user interaction
Patched: 2.18.0 — 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.
OS command injection (CWE-78) exists in Penpot.
Check the vendor advisory for the affected versions of Penpot.
Severity: Critical (CVSS 9.9/10). Successful exploitation can lead to full system takeover.
Update to 2.18.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'Penpot' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'Penpot' . | 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
Penpotを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade Penpot to 2.18.0ステージング環境で 2.18.0 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を含めること。
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3Post-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。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。