Litespeedtech Openlitespeed vulnerabilities
13 vulnerabilities
Known vulnerabilities in Litespeedtech Openlitespeed, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.
CVE-2018-19791litespeedtechopenlitespeed
EPSS score1.24%
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.CVE-2018-19792litespeedtechopenlitespeedEPSS score0.43%
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.CVE-2021-26758litespeedtechopenlitespeedEPSS score2.71%
Privilege Escalation in LiteSpeed Technologies OpenLiteSpeed web server version 1.7.8 allows attackers to gain root terminal access and execute commands on the host system.CVE-2015-3890litespeedtechopenlitespeedEPSS score1.06%
Use-after-free vulnerability in Open Litespeed before 1.3.10.CVE-2025-54939litespeedtechlitespeed_web_adc+3EPSS score0.80%
LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.CVE-2020-5519litespeedtechopenlitespeedEPSS score1.20%
The WebAdmin Console in OpenLiteSpeed before v1.6.5 does not strictly check request URLs, as demonstrated by the "Server Configuration > External App" screen.CVE-2022-0074litespeed_technologieslitespeed_web_server+2EPSS score1.26%
Untrusted Search Path vulnerability in LiteSpeed Technologies OpenLiteSpeed Web Server and LiteSpeed Web Server Container allows Privilege Escalation. This affects versions from 1.6.15 before 1.7.16.1.CVE-2022-0073litespeed_technologieslitespeed_web_server+2EPSS score9.21%
Improper Input Validation vulnerability in LiteSpeed Technologies OpenLiteSpeed Web Server and LiteSpeed Web Server dashboards allows Command Injection. This affects 1.7.0 versions before 1.7.16.1.CVE-2022-0072litespeed_technologieslitespeed_web_server+2EPSS score0.99%
Directory Traversal vulnerability in LiteSpeed Technologies OpenLiteSpeed Web Server and LiteSpeed Web Server dashboards allows Path Traversal. This affects versions from 1.5.11 through 1.5.12, from 1.6.5 through 1.6.20.1, from 1.7.0 before 1.7.16.1CVE-2024-31617litespeedtechopenlitespeedEPSS score0.44%
OpenLiteSpeed before 1.8.1 mishandles chunked encoding.CVE-2026-31386litespeed technologieslsws enterprise+3EPSS score2.21%
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.CVE-2026-104474litespeedtechopenlitespeedEPSS score0.08%
OpenLiteSpeed before 1.9.3 contains a local privilege escalation vulnerability in admin/misc/lsup.sh that runs unverified update packages from a nobody-writable directory as root. Attackers controlling the nobody web process can replace the package in /usr/local/lsws/autoupdate/ before extraction, so its install.sh runs as root on the next update.CVE-2023-40518litespeedtechopenlitespeedEPSS score0.65%
LiteSpeed OpenLiteSpeed before 1.7.18 does not strictly validate HTTP request headers.