Vulnerability · Published Apr 15, 2025 · Assigned by GitHub_M
CVE-2025-27791Collabora Online Vulnerable to Arbitrary File Write
High 8.3
In plain English
A high-severity security flaw in online from CollaboraOnline. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities).
Official description
Collabora Online is a collaborative online office suite based on LibreOffice technology. In versions prior to 24.04.12.4, 23.05.19, and 22.05.25, there is a path traversal flaw in handling the CheckFileInfo BaseFileName field returned from WOPI servers. This allows for a file to be written anywhere the uid running Collabora Online can write, if such a response was supplied by a malicious WOPI server. By combining this flaw with a Time of Check, Time of Use DNS lookup issue with a WOPI server address under attacker control, it is possible to present such a response to be processed by a Collabora Online instance. This issue has been patched in versions 24.04.13.1, 23.05.19, and 22.05.25.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| CollaboraOnline | online | >= 24.04.1.1, < 24.04.13.1>= 23.05.0, < 23.05.19< 22.05.25 |
Weakness: CWE-23 · Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N