CVE-2019-25337

OwnCloud 8.1.8 - Username Disclosure

CVSS 5.3 MEDIUMEPSS 0.4%CWE-203

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

12 Feb 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

OwnCloud 8.1.8 contains a username enumeration vulnerability that allows remote attackers to discover user accounts by manipulating the share.php endpoint. Attackers can send crafted GET requests to /index.php/core/ajax/share.php with a wildcard search parameter to retrieve comprehensive user information.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Affected products

OwnCloud · OwnCloud

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References

https://ftp.icm.edu.pl/packages/owncloud/https://owncloud.org/https://www.exploit-db.com/exploits/47745 https://www.vulncheck.com/advisories/owncloud-username-disclosure