RCE in Litespeedtech Litespeed Web Server
CVE-2026-31386
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.021 (81.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.021 · change: +0.006
Affected products
- Litespeedtech Litespeed Web Server
- Litespeedtech Openlitespeed
- Litespeed Technologies Lsws Enterprise — versions all versions
- Litespeed Technologies Openlitespeed — versions all versions
Weakness classification (CWE)
References
- openlitespeed.org/ (Product)
- www.litespeedtech.com/products/litespeed-web-server (Product)
- jvn.jp/en/jp/JVN22152812/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-31386?
- CVE-2026-31386 is a high-severity vulnerability in Litespeedtech Litespeed Web Server, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-03-16.
- How severe is CVE-2026-31386?
- High severity. CVSS v3 base score is 7.2 out of 10.