CVE-2026-110447(collabora collabora online - built-in code server)の深刻度・悪用状況・対象バージョン
9.8 緊急(CVSS 3.x) 悪用確認済み(CISA KEV) EPSS 取得中…
概要
Collabora Online Built-in CODE Server before 26.4.303 (richdocumentscode), a Nextcloud app, allows remote code execution, as exploited in the wild in September and October 2026, a different vulnerability than CVE-2025-66208. This is an OS command injection in proxy.php when the CODE server isn't running (e.g., the product was recently restarted). The vulnerability is not present in standalone Collabora Online servers; only this deployment with CODE Server is affected.
実際の攻撃で悪用されています。 CISA KEV への追加日: 2026-10-23。対象製品を使っている場合は最優先で対策してください。
CISA の要求対応: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA の要求対応: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
影響を受ける製品
| ベンダー | 製品 | 対象バージョン |
|---|---|---|
| collabora | collabora_online_-_built-in_code_server | < 26.4.303 |
基本情報
- 公開日
- 2026-10-14
- 最終更新
- 2026-10-30
- NVD の状態
- Analyzed
- 弱点の種類
- CWE-78
- CVSS 4.0
- 9.2(CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
対策の進め方
- 上の表で、使っている製品とバージョンが対象か確認します。
- ベンダーの公式アドバイザリ(下の参考情報の「Vendor Advisory」「Patch」)で修正版・回避策を確認します。
- 悪用が確認されているため、パッチ適用までの間もアクセス制限・侵害の痕跡確認を検討します。
- 日本語の情報は JVN iPedia で CVE-2026-110447 を検索 できます。
参考情報
- https://github.com/CollaboraOnline/richdocumentscode/issues/354 Issue Tracking
- https://help.nextcloud.com/t/to-collabora-built-in-user-update-asap/250516 Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-110447 US Government Resource
- NVD: CVE-2026-110447
- CVE.org: CVE-2026-110447
データ出典: NIST NVD、CISA KEV、FIRST EPSS。翻訳は参考情報で、正確性は原文を優先してください。