CVE-2019-25337

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 v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

15 Apr 2026, 00:35

Type	Values Removed	Values Added
Summary		(es) OwnCloud 8.1.8 contiene una vulnerabilidad de enumeración de nombres de usuario que permite a atacantes remotos descubrir cuentas de usuario manipulando el endpoint share.PHP. Los atacantes pueden enviar solicitudes GET manipuladas a /index.PHP/core/ajax/share.PHP con un parámetro de búsqueda comodín para recuperar información de usuario completa.

12 Feb 2026, 23:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-12 23:16

Updated : 2026-04-15 00:35

NVD link : CVE-2019-25337

Mitre link : CVE-2019-25337

CVE.ORG link : CVE-2019-25337

JSON object : View

Products Affected

No product.

CWE

CWE-203

Observable Discrepancy

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