CVE-2025-66507: 1Panel – CAPTCHA Bypass via Client-Controlled Flag
(updated )
A CAPTCHA bypass vulnerability in the 1Panel authentication API allows 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 could be bypassed, enabling automated login attempts and significantly increasing the risk of account takeover (ATO).
References
- github.com/1Panel-dev/1Panel
- github.com/1Panel-dev/1Panel/commit/ac43f00273be745f8d04b90b6e2b9c1a40ef7bca
- github.com/1Panel-dev/1Panel/releases/tag/v2.0.14
- github.com/1Panel-dev/1Panel/security/advisories/GHSA-qmg5-v42x-qqhq
- github.com/advisories/GHSA-qmg5-v42x-qqhq
- nvd.nist.gov/vuln/detail/CVE-2025-66507
Code Behaviors & Features
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