CVE-2019-25337

CRITICAL

9.8

Description

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/12/2026

Last Modified2/13/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-203

References

https://ftp.icm.edu.pl/packages/owncloud/(disclosure@vulncheck.com)

https://owncloud.org/(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/47745(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/owncloud-username-disclosure(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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