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TI-2026-13344 Aliases CVE-2026-15930GHSA-7g75-5pmj-3v8p

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

Priority MEDIUM 47CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-862.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00418 36th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Simple Membership (Unknown): 4.7.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownSimple Membershipbefore 4.7.84.7.8Patch availableCNA
  • Simple Membership VendorUnknown Affected before 4.7.8 Fixed in 4.7.8 Patch available CNA

Remediation

  • Fix · CNA Simple Membership (Unknown) Fixed in 4.7.8

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Simple Membership 4.7.8

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-13345 Simple Membership < 4.7.8 - Unauthenticated Stored XSS via PayPal Subscription Subscriber NamePriority MEDIUM 60
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-15930
  2. 2026-10-03 Alias added: GHSA-7g75-5pmj-3v8p

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences