CVE-2022-37797: Debian Linux
High severity, CVSS 7.5. EPSS: 2.5% chance of exploitation in the next 30 days.
In lighttpd 1.4.65, mod_wstunnel does not initialize a handler function pointer if an invalid HTTP request (websocket handshake) is received. It leads to null pointer dereference which crashes the server. It could be used by an external attacker to cause denial of service condition.
Affected products
Published 2022-09-12. Last modified 2026-06-17.