CVE-2025-59716

CVSS 5.3 MEDIUMEPSS 0.9%CWE-200 CWE-203

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.9%KEV nãoPoC —Patch —

Lifecycle

05 Nov 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

n/a · n/a

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References

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