CVE-2025-59716: ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the
Source GCVE Database
Not known to be exploited · public detection template (Nuclei) · CVSS 5.3 Medium : upgrade to 0.12.5 when convenient.
Data as of 4 Nov 2026, 17:16 UTC
Thin evidence
One scorer or none| CISA-ADP | CVSS 3.1 | 5.3 |
|---|
- Patch
- Available – fixed in 0.12.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 5 Nov 2025
Detectable: evidence found.
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.
What to do
Upgrade owncloud/guests to 0.12.5.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHubowncloud/guestspkg:github/owncloud/guestsOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
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.