WordPress plugin
hCaptcha for WP security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 3 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
3Known vulnerabilities
- Critical0
- High1
- Medium2
- Low0
All hCaptcha for WP vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.3 | Unauthenticated Captcha Verification Bypass ≤5.3.0Update to 5.4.0 | CVE-2026-103347 |
- High7.3Unauthenticated Captcha Verification Bypass
≤5.3.0Update to 5.4.0
hCaptcha for WP: common questions
Does hCaptcha for WP have known vulnerabilities?
Yes. VulnCrest Radar lists 3 known vulnerabilities in hCaptcha for WP: 1 high, 2 medium. None are known to affect version null.
How do I check which version of hCaptcha for WP I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent hCaptcha for WP vulnerability?
CVE-2026-103347, published Oct 1, 2026: hCaptcha for WP <= 5.3.0 - Unauthenticated Captcha Verification Bypass. Severity: High (CVSS 7.3).
Is any hCaptcha for WP vulnerability listed in CISA KEV?
No. None of the known hCaptcha for WP vulnerabilities is currently listed in the CISA KEV catalog.