All vulnerabilities
CVE-2025-66208GHSA-j3q6-q5pc-v5wf

online: Configuration-Dependent RCE (OS Command Injection) in richdocumentscode proxy

CollaboraOnline online
Open in ThreatlineRecord JSON
CVSS
7.2High
ExploitationExploitation reported1 outlet report it, first 26 Oct 2026. Not yet in the KEV catalogReports
Exploit odds (EPSS)1.83%Chance of exploitation activity in the next 30 days, higher than 78% of CVEs. Scored 25 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published3 Dec 2025Updated 3 Dec 2025CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 3 Dec 2025, 18:25 UTCPublishedCVE List
  2. 26 Oct 2026, 12:26 UTCFirst reported exploitedTelegram: CVE Notify
  3. NowNot on CISA's known exploited list yet

Reports 1

One outlet reports exploitation. Reports are not confirmation; each links to its source.

Description

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.

Text from CVE List

Affected versions 1

  • onlineaffected: < 25.04.702CVE List

References 1