TI-2026-71604 Aliases CVE-2026-105881 GHSA-2r5m-cv7x-qqvh

Stored cross-site scripting in WordPress User Registration plugin

LOW 28CWE-79Published 2026-10-13 · Updated 2026-10-13

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · Low
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The ThemeGrill User Registration plugin for WordPress is affected through 5.2.8. Improper neutralization of input during web page generation (CWE-79) lets stored cross-site scripting occur. A user with low privileges can store script that runs in another user's browser when that user interacts with the page.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Description from the CNA

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeGrill User Registration user-registration allows Stored XSS.This issue affects User Registration: from n/a through 5.2.8.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00135 2nd percentileScored 2026-11-07

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 5.2.8	—	No fix listed	CNA

User Registration VendorThemeGrill Affected up to 5.2.8 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 · 2026-10-27

Timeline

2026-10-13 Threatist record created from CVE-2026-105881
2026-10-13 Alias added: GHSA-2r5m-cv7x-qqvh
2026-10-13 CISA SSVC decision points changed
2026-10-13 Priority changed: MEDIUM → LOW

References

Other 1

https://patchstack.com/database/wordpress/plugin/user-registration/vulnerability/wordpress-user-registration-plugin-5-2-8-cross-site-scripting-xss-vulnerability?_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