# CVE-2026-8181

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.

- Page: https://www.vulneraibility.com/cve/CVE-2026-8181
- CVSS: 9.8
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 14.61% (percentile 96.7)
- Unvetted proof-of-concept code on GitHub: 12 GitHub proofs of concept · 1 Nuclei template (first 2026-05-14)
- CISA SSVC: exploitation none, automatable yes, technical impact total (assessed 2026-05-14)
- Weakness: CWE-287
- Published: 2026-05-14

## Affected versions

- burstbv Burst Statistics – Privacy-Friendly WordPress Analytics (Google Analytics Alternative): affected >= 3.4.0 and <= 3.4.1.1

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://www.wordfence.com/threat-intel/vulnerabilities/id/8ca830d6-3d3c-4026-85cd-8447b8a568d3?source=cve
- [other] https://plugins.trac.wordpress.org/browser/burst-statistics/tags/3.4.1.1/includes/Frontend/class-mainwp-proxy.php#L336
- [other] https://plugins.trac.wordpress.org/browser/burst-statistics/trunk/includes/Frontend/class-mainwp-proxy.php#L336
- [other] https://plugins.trac.wordpress.org/browser/burst-statistics/trunk/includes/Frontend/class-mainwp-proxy.php#L328
- [other] https://plugins.trac.wordpress.org/browser/burst-statistics/tags/3.4.1.1/includes/Frontend/class-mainwp-proxy.php#L328
- [other] https://plugins.trac.wordpress.org/browser/burst-statistics/trunk/includes/Frontend/class-mainwp-proxy.php#L314
- [other] https://plugins.trac.wordpress.org/browser/burst-statistics/tags/3.4.1.1/includes/Frontend/class-mainwp-proxy.php#L314
- [other] https://plugins.trac.wordpress.org/browser/burst-statistics/trunk/includes/Traits/trait-admin-helper.php#L205
- [other] https://plugins.trac.wordpress.org/browser/burst-statistics/tags/3.4.1.1/includes/Traits/trait-admin-helper.php#L205
- [other] https://github.com/Burst-Statistics/burst-statistics/blob/2488d3fa54045e7e5342b0445b9f6b5eaac9ea7c/includes/Frontend/class-mainwp-proxy.php#L385

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.