CVE-2025-66515: The Nextcloud Approval app allows approval or disapproval of files in the sidebar. Prior to 1.3.1 and 2.5.0, an…
CVE-2025-66515 · Severity: low · CVSS 2.7 · Published 2025-12-05
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.
No. Junglewise Threat Intelligence has no report of CVE-2025-66515 being exploited in the wild.
How severe is CVE-2025-66515?
Low severity, with a CVSS score of 2.7, published 5 December 2025.
Which products and versions are affected?
Nextcloud Approval. The advisory does not name versions.
Is there a fix for CVE-2025-66515?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-66515?
Check whether you run Nextcloud Approval. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.