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CVE PROGRAM SOURCE RECORD5.4 Medium

CVE-2026-88764

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

Description

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Unknown Simple Membership

Default version status: unaffected

  • 0 to < 4.7.8affected

References