User Registration & Membership < 5.2.6 - Unauthenticated Account Creation While Registration Disabled
Priority HIGH 72CWE-284Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-284.
Summary
The User Registration & Membership WordPress plugin before 5.2.6 does not enforce the site's registration-disabled setting when processing registration-form submissions, allowing unauthenticated users to create new accounts even when the administrator has turned off open registration.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00406 35th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed User Registration & Membership (Unknown): 5.2.6
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | User Registration & Membership | before 5.2.6 | 5.2.6 | Patch available | CNA |
- User Registration & Membership VendorUnknown Affected before 5.2.6 Fixed in 5.2.6 Patch available CNA
Remediation
- Fix · CNA User Registration & Membership (Unknown) Fixed in 5.2.6
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16736
- 2026-10-03 Alias added: GHSA-r7cf-cqmf-q6pj
References
Sources
- CVE-2026-16736 · CVE Program
- CVE-2026-16736 · NVD
- FIRST EPSS
- GHSA-r7cf-cqmf-q6pj · GitHub Advisory Database · CC BY 4.0
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