Is CVE-2025-66508 actively exploited?

CVE-2025-66508 has no public evidence of in-the-wild exploitation as of 2025-12-10.

What is the CVSS score for CVE-2025-66508?

CVE-2025-66508 has a CVSS score of 6.5 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

How do I patch CVE-2025-66508?

Patch guidance is available from fit2cloud security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-66508.

CVE-2025-66508 - remediation guidance & executive summary

Description

1Panel is an open-source, web-based control panel for Linux server management. Versions 2.0.14 and below use Gin's default configuration which trusts all IP addresses as proxies (TrustedProxies = 0.0.0.0/0), allowing any client to spoof the X-Forwarded-For header. Since all IP-based access controls (AllowIPs, API whitelists, localhost-only checks) rely on ClientIP(), attackers can bypass these protections by simply sending X-Forwarded-For: 127.0.0.1 or any whitelisted IP. This renders all IP-based security controls ineffective. This issue is fixed in version 2.0.14.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: low
Integrity: low
Availability: none
Weaknesses: CWE-290

Metadata

Primary Vendor: FIT2CLOUD
Published: 12/9/2025
Last Modified: 12/10/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

fit2cloud : 1panel

Remediation Guidance

Executive Summary

Cite this page

CVE-2025-66508. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2025-66508

View on NIST NVD

CVE-2025-66508 vulnerability