CVE-2024-21496

Description

All versions of the package github.com/greenpau/caddy-security are vulnerable to Cross-site Scripting (XSS) via the Referer header, due to improper input sanitization. Although the Referer header is sanitized by escaping some characters that can allow XSS (e.g., [&], [<], [>], ["], [']), it does not account for the attack based on the JavaScript URL scheme (e.g., javascript:alert(document.domain)// payload). Exploiting this vulnerability may not be trivial, but it could lead to the execution of malicious scripts in the context of the target user’s browser, compromising user sessions.

Weakness classification

• report@snyk.io: CWE-79
• 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-79

Primary references

• report@snyk.io — Exploit, Third Party Advisory
• report@snyk.io — Exploit, Issue Tracking
• report@snyk.io — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory