What is CVE-2026-53673?

CVE-2026-53673 is a high-severity vulnerability in Buddypress, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-06-10.

How severe is CVE-2026-53673?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Buddypress

CVE-2026-53673

BuddyPress 14.4.0 contains an insecure direct object reference vulnerability in the messages REST API that allows authenticated attackers to access arbitrary private message threads by supplying a user_id parameter in the request. Attacker…

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.004 (29.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Buddypress — versions 0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

disclosure@vulncheck.com (product)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-53673?: CVE-2026-53673 is a high-severity vulnerability in Buddypress, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-06-10.
How severe is CVE-2026-53673?: High severity. CVSS v3 base score is 8.1 out of 10.