CVE-2025-59716

Name: CVE-2025-59716
Creator: NVD / NIST
Published: 2025-11-05T17:15:44.8+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2025-59716 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.85%

53.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Owncloud	Guests	<= 0.12.4

References

https://gist.github.com/thesmartshadow/64ae0449e909174d0479a4f23657147fExploit, Third Party Advisory
https://github.com/owncloud/guestsProduct
https://marketplace.owncloud.com/apps/guestsProduct
https://yeswehack.com/reports/411806Permissions Required

Timeline

Published: Nov 5, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-59716?

How severe is CVE-2025-59716?

CVE-2025-59716 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2025-59716?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-59716?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST