Auth bypass in Stripe Payment Forms By Wp Full Pay

CVE-2026-77789

The Stripe Payment Forms by WP Full Pay WordPress plugin before 8.5.1 does not verify that a subscription belongs to the customer bound to the requesting customer-portal session before acting on it, allowing a user with a confirmed portal session to cancel, reactivate or modify subscriptions belonging to other customers.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (15.6th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-77789: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

  • Stripe Payment Forms By Wp Full Pay

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-77789?
CVE-2026-77789 is a medium-severity vulnerability in Stripe Payment Forms By Wp Full Pay, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-08-26.
How severe is CVE-2026-77789?
Medium severity. CVSS v3 base score is 4.3 out of 10.