CVE-2025-66507

1Panel is an open-source, web-based control panel for Linux server management. Versions 2.0.13 and below allow an unauthenticated attacker to disable CAPTCHA verification by abusing a client-controlled parameter. Because the server previously trusted this value without proper validation, CAPTCHA protections can be bypassed, enabling automated login attempts and significantly increasing the risk of account takeover (ATO). This issue is fixed in version 2.0.14.

• https://github.com/1Panel-dev/1Panel/commit/ac43f00273be745f8d04b90b6e2b9c1a40ef7bca
  Patch
• https://github.com/1Panel-dev/1Panel/releases/tag/v2.0.14
  Release Notes
• https://github.com/1Panel-dev/1Panel/security/advisories/GHSA-qmg5-v42x-qqhq
  Vendor Advisory