Auth bypass in Paid Membership Subscriptions
CVE-2026-90951
The Paid Membership Subscriptions WordPress plugin before 3.1.0 does not bind one of its unauthenticated payment actions to the requesting user, allowing someone who holds another member's in-flight payment identifier to delete that member's checkout state.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (7.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 7.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
- Paid Membership Subscriptions
Weakness classification (CWE)
References
- wpscan.com/vulnerability/bf740af6-3674-461e-83f0-22bd5c5b3378/ (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-90951?
- CVE-2026-90951 is a low-severity vulnerability in Paid Membership Subscriptions, classified under Incorrect Authorization. CVSS score: 3.7/10. Published 2026-09-23.
- How severe is CVE-2026-90951?
- Low severity. CVSS v3 base score is 3.7 out of 10.