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.

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Fixes

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Workaround

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History

Fri, 13 Feb 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Owncloud
Owncloud owncloud
Vendors & Products Owncloud
Owncloud owncloud

Fri, 13 Feb 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 12 Feb 2026 23:15:00 +0000

Type Values Removed Values Added
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.
Title OwnCloud 8.1.8 - Username Disclosure
Weaknesses CWE-203
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 5.3, 'vector': '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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-13T17:11:58.109Z

Reserved: 2026-02-12T14:45:41.569Z

Link: CVE-2019-25337

cve-icon Vulnrichment

Updated: 2026-02-13T17:11:53.891Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-12T23:16:07.367

Modified: 2026-02-13T14:23:48.007

Link: CVE-2019-25337

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-13T21:29:01Z

Weaknesses