CVE-2026-118582: CAPTCHA - Moderately critical - Session Replay (CAPTCHA bypass) - SA-CONTRIB-2026-281

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-30 · updated 2026-10-30
Weakness: CWE-288

Description

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal CAPTCHA allows Functionality Bypass. This issue affects CAPTCHA versions: from 0.0.0 to 1.18.0, from 2.0.0 to 2.0.11.

Affected products

Drupal CAPTCHA: before 1.18.0; from 2.0.0 before 2.0.11 — fixed in 1.18.0, 2.0.11

How to fix

Upgrade to a fixed version: Drupal CAPTCHA 1.18.0, 2.0.11. Check the vendor advisory for mitigations.

References

https://www.drupal.org/sa-contrib-2026-281

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