CVE-2025-59716

State: Published
Severity: 5.3 Medium
Published: Nov 5, 2025
Updated: Nov 5, 2025
Reserved: Sep 19, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	CISA-ADP

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-203 Observable Discrepancy

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://github.com/owncloud/guests
https://yeswehack.com/reports/411806
https://marketplace.owncloud.com/apps/guests
https://gist.github.com/thesmartshadow/64ae0449e909174d0479a4f23657147f

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