CVE-2025-66507
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductFit2cloud 1panel
PublishedDec 9, 2025
First seenDec 9, 2025
Weakness typeCWE-602CWE-602CWE-807CWE-807CWE-290CWE-290
How to fix
Update
- fit2cloud 1panel2.0.14 or later
- github.com/1Panel-dev/1Panel2.0.14, 2.0.14+incompatible or later
- github.com/1Panel-dev/1Panel/core0.0.0-20251128030527-ac43f00273be or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| fit2cloud 1panel | v < 2.0.14 | 2.0.14 |
| github.com/1Panel-dev/1PanelGo | v < 2.0.14, v < 2.0.14+incompatible | 2.0.14, 2.0.14+incompatible |
| github.com/1Panel-dev/1Panel/coreGo | v < 0.0.0-20251128030527-ac43f00273be | 0.0.0-20251128030527-ac43f00273be |
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