CVE-2026-16259CWE-269privilege-escalation

CVE-2026-16259

Critical · published August 29, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
19.1
In the wild
Unconfirmed
What it is

The Uix UserCenter WordPress plugin through 1.0.3 does not verify that the account being modified through an unauthenticated profile-update action belongs to the requester, and it authenticates that action with a token whose signing key is hardcoded and identical across every install, allowing unauthenticated attackers to forge a token for any user, overwrite an administrator's email and password, and take over the account.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00277 · 19.1th percentile
Weakness
CWE-269 · Improper Privilege Management
Published
2026-08-29T10:17Z
References (1)
EPSS history
Timeline
  • 30 AUG 16:16Z
    EPSS moved — → 0%
    epss
  • 29 AUG 06:00Z
    Uix UserCenter <= 1.0.3 - Unauthenticated Privilege Escalation
    cvelistv5