VulnerabilityPublished 11 Nov 2026

CVE-2026-109870: User Registration & Membership (WordPress plugin) · Improper Privilege Management

Affects User Registration & Membership (WordPress plugin)Source CVE Database V5

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Not known to be exploited : upgrade to 5.3.2 soon.

Data as of 11 Nov 2026, 06:47 UTC

Severity

High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Patch: Available – fixed in 5.3.2

Exploitation evidence

Disclosed: evidence found.
CVE published 11 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade User Registration & Membership (WordPress plugin) to 5.3.2.

Affected software

Product	Affected	Fixed in
User Registration & Membership	Affected >=5.2.8 <5.3.2	Fixed in 5.3.2

AI-suggested

Upgrade the User Registration & Membership plugin to version 5.3.2 or later, where this vulnerability has been fixed. No other mitigation is required as the fix addresses the root cause.

Description

A vulnerability in the User Registration & Membership WordPress plugin before version 5.3.2 allows unauthenticated users to exploit improper privilege management by applying an invalid discount coupon to a paid membership plan. This flaw causes the system to treat fully discounted orders as paid without verifying coupon validity, enabling attackers to gain roles mapped to paid plans, potentially escalating privileges up to administrator.

Impact

Unauthenticated attackers can exploit this vulnerability to gain unauthorized membership roles that are normally paid, potentially escalating their privileges to administrator level. This can lead to full control over the affected WordPress site, including management of content, users, and site settings.

Summary

The User Registration & Membership WordPress plugin versions 5.2.8 through before 5.3.2 contain an improper privilege management vulnerability (CWE-269). The plugin fails to verify that a discount coupon applied to a paid membership plan is valid for that plan before treating a fully discounted order as paid. This allows unauthenticated users to be assigned the role associated with the paid plan without actual payment, which can lead to privilege escalation, including administrator-level access if the plan maps to such a role. The issue is fixed in version 5.3.2.

CWE-269Improper Privilege Management (opens in a new tab)
Class weaknessLikelihood of exploit: MediumOWASP Top 10 A06:2025: Insecure Design (opens in a new tab)
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design · Operation
Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Architecture and Design · Separation of Privilege
Follow the principle of least privilege when assigning access rights to entities in a software system.
Architecture and Design · Separation of Privilege
Consider following the principle of separation of privilege. Require multiple conditions to be met before permitting access to a system resource.
OWASP Cheat Sheets
Docker Security (opens in a new tab)
Third Party Javascript Management (opens in a new tab)
Virtual Patching (opens in a new tab)
Secure Design Principles (opens in a new tab)
OWASP ASVS 4.0.3
V1.4.4 (opens in a new tab)
V1.4.5 (opens in a new tab)
V1.10.1 (opens in a new tab)
Attack patterns
Restful Privilege Elevation (opens in a new tab)
Privilege Abuse (opens in a new tab)
Privilege Escalation (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

wpscan.com/vulnerability/6cac7dd1-2ae5-4b5b-94c7-a8a4a63ef84b/ (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 11 Nov 2026, 06:47 UTC

WeaknessesCWE-269

Technical details

References

Community reviews

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