EUVD-2026-67574
GHSA-mfx5-4qv9-69f3
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Network-exploitable with subscriber auth (PR:L); no confidentiality or availability impact, only limited integrity disruption via unauthorized state cancellation.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
4DescriptionCVE.org
The User Registration & Membership WordPress plugin before 5.2.5 does not verify that the account whose pending email change is being cancelled belongs to the user making the request, allowing authenticated users with Subscriber-level access and above to cancel any other user's in-progress email change, including an administrator's.
AnalysisAI
Missing object-level authorization in the User Registration & Membership WordPress plugin (before 5.2.5) allows any authenticated Subscriber-level user to cancel a pending email change belonging to any other account - including site administrators. The flaw stems from the plugin's email-change cancellation handler accepting a user identifier supplied by the requester without verifying account ownership, a classic IDOR pattern. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid WordPress account with at minimum Subscriber-level role on the target site - unauthenticated users cannot exploit this flaw (CVSS PR:L confirms authenticated access is mandatory). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 3.1 rates this at 4.3 (Medium) with vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N, reflecting network-accessible exploitation requiring only subscriber authentication with low integrity impact and no confidentiality or availability consequences. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update the User Registration & Membership plugin to version 5.2.5 or later, which introduces a server-side ownership check on the email-change cancellation endpoint. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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