CVE-2026-8181criticalobserved exploitationCWE-287

CVE-2026-8181: critical vulnerability in burstbv Burst Statistics – Privacy-Friendly…

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

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90Vexday Risk Score

Patch now. It exploitation observed by VulnCheck and has a working public exploit.

ssvc Actcvss 9.8epss 15%
from disclosure to weaponsame day
Published on NVDMay 14
1st PoCMay 14
VulnCheckMay 14
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
burstbv · Burst Statistics – Privacy-Friendly WordPress Analytics (Google Analytics Alternative)
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