CVE-2025-66507: 1panel — Fix

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-290 CWE-290

CWE-602 CWE-602

CWE-807 CWE-807

Affected Products

Vendor	Product	Versions
fit2cloud	1panel	< 2.0.14

References

Advisories & Patches

https://github.com/1Panel-dev/1Panel/commit/ac43f00273be745f8d04b90b6e2b9c1a40ef7bca https://github.com/1Panel-dev/1Panel/security/advisories/GHSA-qmg5-v42x-qqhq

Other References

https://github.com/1Panel-dev/1Panel/releases/tag/v2.0.14

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-66507? +

CVE-2025-66507 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-66507? +

CVE-2025-66507 affects products from fit2cloud, specifically: 1panel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-66507? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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