Paper/Archive/CVE-2026-15930

CVE-2026-15930

Unknown Simple Membership — Simple Membership < 4.7.8 - Unauthenticated Administrator Account Takeover via Registration Username Collision

EPSS 0.4%CVSS 9.4

critical.is priorityof 100

CVSS 9.4 (ADP)9.4 / 10 × 3028.2 Not in CISA KEV+300.0 EPSS percentile 36.2.362 × 207.2 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

The Simple Membership WordPress plugin before 4.7.8 does not verify whether user creation failed during registration before using the returned value as a user ID to update an account, allowing unauthenticated attackers to overwrite the primary administrator's account data (including the email address) and take over that account through the password reset flow.

Affected

ProductAffectedFixed inSource

Simple Membership< 4.7.84.7.8CNA

Scores by source

CISA ADP9.4CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

exploitwpscan.com/vulnerability/e46948f1-0e06-4e76-8fc8-df661eb786a5