EUVD-2026-39782
GHSA-252c-7783-4v3h
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Network-reachable unauthenticated endpoint with no user interaction; limited read/write impact on plugin data only, no availability or scope change.
Primary rating from Vendor (patchstack).
CVSS VectorVendor: patchstack
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Lifecycle Timeline
1DescriptionCVE.org
Unauthenticated Broken Access Control in User Registration <= 5.2.2 versions.
AnalysisAI
Broken access control in the WordPress User Registration plugin (versions <= 5.2.2) allows unauthenticated remote attackers to bypass authorization checks and access or manipulate functionality restricted to privileged users. The flaw stems from missing authorization (CWE-862) on one or more plugin endpoints, permitting network-accessible exploitation with no credentials or user interaction required. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No authentication is required - CVSS PR:N confirms exploitation by unauthenticated remote users. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD CVSS score of 6.5 (Medium) reflects a network-accessible, unauthenticated, low-complexity flaw with limited confidentiality and integrity impact (C:L/I:L/A:N) and no scope change. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated remote attacker sends a crafted HTTP POST request to the WordPress AJAX endpoint targeting a plugin action that lacks a capability or authentication check. The server processes the request without verifying identity, allowing the attacker to read user-related data or trigger registration-related write operations that should require elevated privileges. … |
| Remediation | Update the User Registration plugin to a version beyond 5.2.2 as soon as the vendor releases a patched build; check the WordPress plugin repository (wordpress.org/plugins/user-registration) or the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/user-registration/vulnerability/wordpress-user-registration-plugin-5-1-5-broken-access-control-vulnerability for the confirmed fixed version number, which is not independently confirmed in the available intelligence data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today