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CVE-2026-31386

27
FAUCET Score

CVE-2026-31386 is a high-severity OS command injection vulnerability affecting OpenLiteSpeed and LSWS Enterprise products, allowing an attacker with administrative privileges to execute arbitrary operating system commands. Rated 7.2 HIGH on CVSS, its network-based attack vector and low complexity could lead to full system compromise (confidentiality, integrity, availability) once an administrator account is compromised. While no public exploit code is currently available and it is not listed in CISA KEV, it is on a "Hot List" and has garnered some community discussion, indicating a need for vigilance despite requiring high privileges for exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.3.5CPE matchmatch criteria
cpe:2.3:a:litespeedtech:litespeed_web_server:*:*:*:*:*:*:*:*
<= 1.9.0CPE matchmatch criteria
cpe:2.3:a:litespeedtech:openlitespeed:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.6HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
1.51%
Probability of exploitation in next 30 days
EPSS Percentile
71.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0151 is in the 66th percentile among its peer group of 5,530 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvn.jp / en/jp/JVN22152812
Third Party Advisory
openlitespeed.org
Product
litespeedtech.com / products/litespeed-web-server
Product