OS Command Injection in Collabora (CVE-2025-66208)
Summary
OS command injection in Collabora (CVE-2025-66208). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 25.04.702 or later.
Original description
The description as published by the source.
Collabora Online - Built-in CODE Server (richdocumentscode) provides a built-in server with all of the document editing features of Collabora Online. In versions prior to 25.04.702, Collabora Online has a Configuration-Dependent RCE (OS Command Injection) in richdocumentscode proxy. Users of Nextcloud with Collabora Online - Built-in CODE Server app can be vulnerable to attack via proxy.php and an intermediate reverse proxy. This vulnerability is fixed in 25.04.702.
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-2025-66208 has been found in Collabora.
Successful exploitation can lead to full system takeover. CVSS score: 9.8/10.
What to do: upgrade Collabora to 25.04.702 or later.
If unsure, ask your IT team or search "Collabora CVE-2025-66208" on the vendor's site.
CVE-2025-66208 (Collabora) — CWE-78 / CVSS v3 9.8
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 25.04.702 — 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 Collabora.
Check the vendor advisory for the affected versions of Collabora.
Severity: Critical (CVSS 9.8/10). Successful exploitation can lead to full system takeover.
Update to 25.04.702.
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 'Collabora' . 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 'Collabora' . | 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
Collabora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 Collabora to 25.04.702ステージング環境で 25.04.702 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。