WordPress User Registration plugin <= 5.3.0 - Content Injection vulnerability

published 2026-10-29 11 d ago modified 2026-10-29 10 d ago also EUVD-2026-112913

cvss: 5.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits: 0; none known

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in ThemeGrill User Registration user-registration allows Code Injection.This issue affects User Registration: from n/a through 5.3.0.

Patch / fix

fixed in 1

ThemeGrill User Registration 5.3.1

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 11 d ago (2026-10-29)

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

ThemeGrill User Registration

Classification

Weakness

CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/wordpress/plugin/user-registration/vulnerability/wordpress-user-registration-plugin-5-3-0-content-in
vdb-entry

Sources

CVE List CVE-2026-25467
NVD CVE-2026-25467

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary