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TI-2026-10311 Aliases CVE-2026-11966GHSA-2wp6-4gxm-vfvx

User Registration & Membership < 5.2.3 - Unauthenticated Limited User Deletion via Stripe Subscription Handler

Priority MEDIUM 63CWE-639Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-639.

Summary

The User Registration & Membership WordPress plugin before 5.2.3 does not perform a capability check for unauthenticated callers on one of its membership payment actions and acts on a caller-supplied user identifier, allowing unauthenticated attackers to delete recently-registered, payment-pending user accounts.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00304 23rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed User Registration & Membership (Unknown): 5.2.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
UnknownUser Registration & Membership4.2.3 to before 5.2.35.2.3Patch availableCNA
  • User Registration & Membership VendorUnknown Affected 4.2.3 to before 5.2.3 Fixed in 5.2.3 Patch available CNA

Remediation

  • Fix · CNA User Registration & Membership (Unknown) Fixed in 5.2.3

Fixed in the same release

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

  • Release ·

    User Registration & Membership 5.2.3

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-10306 User Registration & Membership < 5.2.3 - Unauthenticated Privilege Escalation via Unbound members_data Membership IDPriority LOW 37
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-11966
  2. 2026-10-03 Alias added: GHSA-2wp6-4gxm-vfvx

References

Exploit 1

Sources

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