CVE-2019-25337CWE-203

OwnCloud 8.1.8 - Username Disclosure

Medium · published February 12, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
39.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
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
EPSS
0.00472 · 39.8th percentile
Weakness
CWE-203 · Observable Discrepancy
Published
2026-02-12T22:48Z
EPSS history
Timeline
  • 12 FEB 22:48Z
    OwnCloud 8.1.8 - Username Disclosure
    cvelistv5