WordPress hCaptcha for WP plugin <= 4.21.1 - Broken Access Control vulnerability

published 2026-02-19 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-8343

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

Missing Authorization vulnerability in hcaptcha hCaptcha for WP hcaptcha-for-forms-and-more allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects hCaptcha for WP: from n/a through <= 4.21.1.

Patch / fix

fixed in 1

hcaptcha hCaptcha for WP 4.22.0

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 8 mo ago (2026-02-20)

Exploit prediction

0.26% 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

hcaptcha hCaptcha for WP

Classification

Weakness

CWE-862 Missing Authorization

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/Wordpress/Plugin/hcaptcha-for-forms-and-more/vulnerability/wordpress-hcaptcha-for-wp-plugin-4-22-0-b
vdb-entry

Sources

CVE List CVE-2026-25315
NVD CVE-2026-25315

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