CVE-2026-8181CWE-287

Burst Statistics 3.4.0 - 3.4.1.1 - Authentication Bypass to Admin Account Takeover

Critical · published May 14, 2026

CVSS v3.1
9.8
EPSS
3%
Percentile
87.3
In the wild
Unconfirmed
What it is

The Burst Statistics – Privacy-Friendly WordPress Analytics (Google Analytics Alternative) plugin for WordPress is vulnerable to Authentication Bypass in versions 3.4.0 to 3.4.1.1. This is due to incorrect return-value handling in the `is_mainwp_authenticated()` function when validating application passwords from the Authorization header. This makes it possible for unauthenticated attackers, with knowledge of an administrator username, to impersonate that administrator for the duration of the request by supplying any random Basic Authentication password achieving privilege escalation.

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
0.03012 · 87.3th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-05-14T05:30Z
EPSS history
Timeline
  • 25 SEP 03:28Z
    EPSS moved 15% → 3%
    epss
  • 14 MAY 05:30Z
    Burst Statistics 3.4.0 - 3.4.1.1 - Authentication Bypass to Admin Account Takeover
    cvelistv5