Vulnerability in 1panel-Dev 1panel
CVE-2025-66508
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.
EPSS: 0.002 (14.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
Affected products
- 1panel-dev 1panel — versions < 2.0.14
- Fit2cloud 1panel
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-66508?
- CVE-2025-66508 is a medium-severity vulnerability in 1panel-Dev 1panel, classified under Authentication Bypass by Spoofing. CVSS score: 6.5/10. Published 2025-12-09.
- How severe is CVE-2025-66508?
- Medium severity. CVSS v3 base score is 6.5 out of 10.