What is CVE-2026-8155?

CVE-2026-8155 is a medium-severity vulnerability in Buddypress, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-07-31.

How severe is CVE-2026-8155?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Buddypress

CVE-2026-8155

The BuddyPress WordPress plugin before 14.5.0 does not properly enforce authorization on its private messaging endpoints, allowing any authenticated user (Subscriber+) to read, modify, or delete other users' private messages.

Vulnerability class: IDOR (Insecure Direct Object Reference)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Unknown Buddypress — versions 0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-8155?: CVE-2026-8155 is a medium-severity vulnerability in Buddypress, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-07-31.
How severe is CVE-2026-8155?: Medium severity. CVSS v3 base score is 5.4 out of 10.