CVE-2025-66515

Nextcloud Approval app allows users to request approval for other users file

CVSS 2.7 LOWEPSS 0.3%CWE-287

Vexday Risk Score

8Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 2.7EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

05 Dec 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

The Nextcloud Approval app allows approval or disapproval of files in the sidebar. Prior to 1.3.1 and 2.5.0, an authenticated user listed as a requester in a workflow can set another user’s file into the “pending approval” without access to the file by using the numeric file id. This vulnerability is fixed in 1.3.1 and 2.5.0.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

Affected products

nextcloud · security-advisories

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

https://github.com/nextcloud/approval/commit/e30b56b7832255311ac800b7875f44866e88fff4 https://github.com/nextcloud/approval/pull/334 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-q26g-fmjq-x5g5 https://hackerone.com/reports/3338748