What’s Vulnerable › Vulnerabilities

CVE-2024-21494

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-17 · updated 2026-06-17
• Weakness: CWE-290

Description

All versions of the package github.com/greenpau/caddy-security are vulnerable to Authentication Bypass by Spoofing via the X-Forwarded-For header due to improper input sanitization. An attacker can spoof an IP address used in the user identity module (/whoami API endpoint). This could lead to unauthorized access if the system trusts this spoofed IP address.

Affected products

• github.com/greenpau/caddy-security: all versions

References

• https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy/
• https://github.com/greenpau/caddy-security/issues/266
• https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249859
• https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy/
• https://github.com/greenpau/caddy-security/issues/266
• https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249859

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