# CVE-2025-66507

## Summary

- **CVE ID:** CVE-2025-66507
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
- **CWE:** CWE-602, CWE-807, CWE-290
- **Published:** Dec 9, 2025
- **Last Modified:** Mar 13, 2026

## 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.

## Affected Products

- 1Panel-dev — 1Panel (< 2.0.14)

## References

- [CNA](https://github.com/1Panel-dev/1Panel/security/advisories/GHSA-qmg5-v42x-qqhq)
- [CNA](https://github.com/1Panel-dev/1Panel/commit/ac43f00273be745f8d04b90b6e2b9c1a40ef7bca)
- [CNA](https://github.com/1Panel-dev/1Panel/releases/tag/v2.0.14)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.47%
- **EPSS Percentile:** 38.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._