Snipe-IT versions before 8.7.0 contain a CSS injection vulnerability in the Custom CSS field due to incomplete sanitization that reverses HTML encoding on greater-than and double-quote characters. Superusers can plant malicious CSS payloads using @import and url() references to exfiltrate CSRF tokens from other superusers via attribute-selector rules, enabling account takeover.
In Snipe-IT, versions v3.0-alpha to v5.3.7 are vulnerable to Host Header Injection. By sending a specially crafted host header in the reset password request, it is possible to send password reset links to users which once clicked lead to an attacker controlled server and thus leading to password reset token leak. This leads to account take over.