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    CVE-2021-26758

    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.

    Published:Apr 7, 2021
    Last Modified:Nov 21, 2024
    EPS:Apr 7, 2021
    EPSS Score:0.03356
    CVSS Score:8.8

    Affected Products

    Vendor
    Litespeedtech
    Product
    Openlitespeed

    Exploits

    https://docs.unsafe-inline.com/0day/openlitespeed-web-server-1.7.8-command-injection-to-privilege-escalation-cve-2021-26758https://github.com/litespeedtech/openlitespeed/issues/217https://www.exploit-db.com/exploits/49556https://docs.unsafe-inline.com/0day/openlitespeed-web-server-1.7.8-command-injection-to-privilege-escalation-cve-2021-26758https://github.com/litespeedtech/openlitespeed/issues/217https://www.exploit-db.com/exploits/49556

    Common Weakness Enumeration

    CWE-269 Improper Privilege Management

    Related CVEs

    CVE-2026-31386 (CVSS 8.6) — OpenLiteSpeed and LSWS Enterprise provided by LiteSpeed Technologies contain an OS command injection vulnerabi…
    CVE-2021-47855 (CVSS 5.1) — Openlitespeed 1.7.9 contains a stored cross-site scripting vulnerability in the dashboard's Notes parameter th…
    CVE-2025-54939 (CVSS 5.3) — LiteSpeed QUIC (LSQUIC) Library before 4.3.1 has an lsquic_engine_packet_in memory leak.…
    CVE-2024-31617 (CVSS 5.3) — OpenLiteSpeed before 1.8.1 mishandles chunked encoding.…
    CVE-2023-40518 (CVSS 7.5) — LiteSpeed OpenLiteSpeed before 1.7.18 does not strictly validate HTTP request headers.…
    CVE-2022-0074 (CVSS 8.8) — Untrusted Search Path vulnerability in LiteSpeed Technologies OpenLiteSpeed Web Server and LiteSpeed Web Serve…
    CVE-2022-0073 (CVSS 8.8) — Improper Input Validation vulnerability in LiteSpeed Technologies OpenLiteSpeed Web Server and LiteSpeed Web S…
    CVE-2022-0072 (CVSS 5.8) — Directory Traversal vulnerability in LiteSpeed Technologies OpenLiteSpeed Web Server and LiteSpeed Web Server …
    CVE-2020-5519 (CVSS 9.8) — The WebAdmin Console in OpenLiteSpeed before v1.6.5 does not strictly check request URLs, as demonstrated by t…
    CVE-2018-19792 (CVSS 6.7) — The server in LiteSpeed OpenLiteSpeed before 1.5.0 RC6 allows local users to cause a denial of service (buffer…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High