# CVE-2025-59716: ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token}…

Source: https://junglewise.ai/threats/cve-2025-59716-owncloud-guests-before-0-12-5-allows-unauthenticated-user  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-11-05  
License: CC BY 4.0 with a link back

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.

Vendors: [ownCloud](https://junglewise.ai/threats/vendors/owncloud).

## Quick answers

**Is CVE-2025-59716 exploited in the wild?** 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.

## Affected products

- ownCloud Guests