Vulnerability · Published Nov 5, 2025 · Assigned by mitre
CVE-2025-59716
Medium 5.3
In plain English
A medium-severity information exposure in the affected software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 61% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei.
Official description
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.
Affected products (as reported)
Weakness: CWE-200, CWE-203 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N