CVE-2025-59716: ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token}…
CVE-2025-59716 · Severity: medium · CVSS 5.3 · Published 2025-11-05
ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token} endpoint. Because of insufficient validation of the supplied token in showPasswordForm, the server responds differently when an e-mail address corresponds to a valid pending guest user rather than a non-existent user.
No. Junglewise Threat Intelligence has no report of CVE-2025-59716 being exploited in the wild.
How severe is CVE-2025-59716?
Medium severity, with a CVSS score of 5.3, published 5 November 2025.
Which products and versions are affected?
ownCloud Guests. The advisory does not name versions.
Is there a fix for CVE-2025-59716?
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-2025-59716?
Check whether you run ownCloud Guests. 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.