LiteSpeedTech LiteSpeed Technologies OpenLiteSpeed any version

The WebAdmin Console in OpenLiteSpeed before v1.6.5 does not strictly check request URLs, as demonstrated by the "Server Configuration > External App" screen.

Authenticated Remote Code Execution in OpenLiteSpeed Web Server

Privilege Escalation in OpenLiteSpeed Web Server

OpenLiteSpeed and LSWS Enterprise provided by LiteSpeed Technologies contain an OS command injection vulnerability. An arbitrary OS command may be executed by an attacker with the administrative privilege.

Use-after-free vulnerability in Open Litespeed before 1.3.10.

LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.

LiteSpeed OpenLiteSpeed before 1.7.18 does not strictly validate HTTP request headers.

The server in LiteSpeed OpenLiteSpeed before 1.5.0 RC6 allows local users to cause a denial of service (buffer overflow) or possibly have unspecified other impact by creating a symlink through which the openlitespeed program can be invoked with a long command name (involving ../ characters), which is mishandled in the LshttpdMain::getServerRootFromExecutablePath function.

The server in LiteSpeed OpenLiteSpeed before 1.5.0 RC6 does not correctly handle requests for byte sequences, allowing an attacker to amplify the response size by requesting the entire response body repeatedly, as demonstrated by an HTTP Range header value beginning with the "bytes=0-,0-" substring.

Directory Traversal in OpenLiteSpeed Web Server

OpenLiteSpeed before 1.8.1 mishandles chunked encoding.