CVE-2026-88764 — Simple Membership < 4.7.8 - Subscriber+ Membership Level Escalation via PayPal Standard subsc_ref

CVE-2026-88764

Simple Membership < 4.7.8 - Subscriber+ Membership Level Escalation via PayPal Standard subsc_ref PUBLISHED

Description (CNA)

The Simple Membership WordPress plugin before 4.7.8 does not validate that the membership level supplied in a PayPal payment notification matches the level configured for the paid payment button, allowing members to pay for a lower-priced membership while being granted a higher, more privileged membership level.

Affected (CNA)

Vendor / product	Versions
Unknown / Simple Membership	affected 0 before 4.7.8

CWE

No CWE identifiers supplied.

References

https://wpscan.com/vulnerability/54fdf46e-0385-40a3-b3bc-a862dc0fb03e/

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.