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CVE-2026-85602: Product identification pending

Severity

9.3 (CRITICAL)

Affected versions

Through 9.1.19

Fixed version

9.1.20.

Patch status

Patched

Published

2026-09-04T12:17:23.903

Modified

2026-09-04T19:17:33.143

Why it matters

This matters because the affected product may be exposed on public websites. A vulnerable plugin can create a direct path to site compromise, malicious code deployment, or data theft.

Recommended admin actions

• Prioritize validation immediately due to critical CVSS severity.
• Check whether the affected WordPress plugin or theme is installed.
• Update, disable, or remove the affected component if present.
• Compare installed versions against the affected version range in the advisory.

Technical summary

The Grav Form plugin (getgrav/grav-plugin-form) versions 8.0.6 through 9.1.19 select the reCAPTCHA version to validate based solely on which response field key is present in the submitted payload. On a site configured for reCAPTCHA v3, an anonymous attacker can place their v3 token under the v2 field name (g-recaptcha-response instead of token), causing validation to use the v2 branch, which never applies the score threshold or verifies the expected action. This results in a complete bypass of reCAPTCHA v3 bot protection. The issue is fixed in version 9.1.20.

View the official NVD record for CVE-2026-85602

CVE data is sourced from NVD/CNA records and optional enrichment. Validate against the vendor advisory before taking production action.