CVE-2025-59716

MEDIUM EXPLOITED NUCLEI

Owncloud Guests < 0.12.4 - Information Disclosure

Title source: rule

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.

Nuclei Templates (1)

ownCloud Guests - User Enumeration

MEDIUMVERIFIEDby DhiyaneshDk

Shodan: http.title:"ownCloud"

FOFA: title="ownCloud"

References (4)

[Exploit, Third Party Advisory] https://gist.github.com/thesmartshadow/64ae0449e909174d0479a4f23657147f

[Product] https://github.com/owncloud/guests

View Writeup ZIP pw:eip

[Product] https://marketplace.owncloud.com/apps/guests

[Permissions Required] https://yeswehack.com/reports/411806

Scores

CVSS v3 5.3

EPSS 0.0072

EPSS Percentile 72.6%

Attack Vector NETWORK

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

Details

VulnCheck KEV 2026-04-01

CWE

CWE-200 CWE-203

Status published

Products (1)

owncloud/guests < 0.12.4

Published Nov 05, 2025

Tracked Since Feb 18, 2026