TI-2026-86510 Aliases CVE-2026-120840 GHSA-j5v7-2pwh-2rj7

Missing authorization in WordPress User Registration plugin

LOW 17CWE-862Published 2026-11-07 · Updated 2026-11-07

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

ThemeGrill User Registration, a WordPress plugin, is affected in all versions through 5.3.0. A missing authorization check lets attackers reach functionality that should be restricted. An authenticated user with low privileges can exploit the flaw remotely to affect integrity.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

Missing Authorization vulnerability in ThemeGrill User Registration user-registration allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects User Registration: from n/a through 5.3.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
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
ThemeGrill	User Registration	up to 5.3.0	—	No fix listed	CNA

User Registration VendorThemeGrill Affected up to 5.3.0 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for User Registration.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Timeline

2026-11-07 Threatist record created from CVE-2026-120840
2026-11-07 Alias added: GHSA-j5v7-2pwh-2rj7
2026-11-07 CISA SSVC decision points changed

References

Other 1

https://patchstack.com/database/wordpress/plugin/user-registration/vulnerability/wordpress-user-registration-plugin-5-3-0-broken-access-control-vulnerability-2?_s_id=cve

TI-2024-16396 WordPress LMS by Masteriyo plugin <= 1.7.2 - Privilege Escalation vulnerability CVSS 3.1CRITICAL 9.8
TI-2026-51986 WordPress Masteriyo - LMS plugin <= 2.3.2 - Arbitrary File Upload vulnerability CVSS 3.1CRITICAL 9.8
TI-2026-39610 WordPress Registration Form for WooCommerce plugin <= 1.0.9 - Privilege Escalation vulnerability CVSS 3.1CRITICAL 9.8
TI-2026-86554 Privilege escalation in Registration Form for WooCommerce checkout CVSS 3.1CRITICAL 9.8
TI-2020-18616 themegrill-demo-importer before 1.6.2 does not require authentication for wiping the… CVSS 3.1CRITICAL 9.1
TI-2020-18972 ThemeGrill Demo Importer 1.3.4 - 1.6.1 - Authorization Bypass to Site Reset CVSS 3.1CRITICAL 9.9

See all 46 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences