CVE-2026-104474
5.4
CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| litespeedtech | openlitespeed | 0 < 1.9.3 | affected |
| litespeedtech | openlitespeed | 1.9.3 | unaffected |
Weaknesses
- CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
References
- https://openlitespeed.org/release-log/version-1-9-x/
- https://github.com/litespeedtech/openlitespeed/commit/468523ce84388cea9ba6633c26517bc05b3e2bc1
- https://github.com/litespeedtech/openlitespeed/blob/v1.9.2/dist/admin/misc/lsup.sh#L538
- https://www.vulncheck.com/advisories/openlitespeed-before-1.9.3-local-privilege-escalation-via-lsup-sh-auto-update
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.