CVE-2019-25337

CRITICAL
2026-02-12 [email protected]
9.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 22:02 vuln.today
PoC Detected
Feb 13, 2026 - 14:23 vuln.today
Public exploit code
CVE Published
Feb 12, 2026 - 23:16 nvd
CRITICAL 9.8

Tags

PHP

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.

Analysis

Username enumeration in OwnCloud 8.1.8 via share.php endpoint. PoC available.

Technical Context

CWE-203 observable discrepancy in share.php responses.

Affected Products

['OwnCloud 8.1.8']

Remediation

Update OwnCloud.

Priority Score

69
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +49
POC: +20

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CVE-2019-25337 vulnerability details – vuln.today
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