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CVE-2026-109871 User Registration & Membership < 5.3.2 - Subscriber+ Payment Bypass via Membership Renewal

4.3 mediumEPSS 0.3%

Medium (4.3) in unknown user registration & membership. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.

On this page
The User Registration & Membership WordPress plugin before 5.3.2 does not verify that a payment has actually been completed before extending a paid membership subscription, allowing authenticated users with an active paid subscription to renew it indefinitely without paying.

Severity

CVSS 3.1

4.3 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS
0.3% estimated probability of exploitation activity in the next 30 days; 17th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC)
Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-11. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE
CWE-284 Improper Access Control
OWASP Top 10
A01:2025 Broken Access Control
Published
Modified
Assigned by
WPScan (CNA)
NVD analysis
Deferred: the NVD does not plan to analyze it
Record from
the NVD, synced

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Affected

  • unknown:user registration & membership

Attack patterns (CAPEC)

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits. More on the page of CWE-284 (17).

History

  1. Scored 4.3 medium
  2. The NVD deferred its analysis

Changes since this site first stored the record. The same for every record: /api/public/changes.

References

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