CVE-2026-3968Public exploitNetwork attack vector

Authenticated command execution via unsandboxed Nashorn evaluation

Published Mar 12, 2026 · Updated Mar 12, 2026

Code injection in Frostmourne 1.0 allows remote authenticated users to execute commands through stored alarm expressions. ExpressionRule.java passes the user-controlled EXPRESSION value directly to scriptEngine.eval, where Nashorn exposes Java classes and system resources without validation or a sandbox. Administrative alarm-creation access is required, and execution occurs when the stored rule is evaluated manually or by the scheduler, granting the application process's file, command, and network privileges.

CVSS severity5.3
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Code injection in Frostmourne 1.0 allows remote authenticated users to execute commands through stored alarm expressions. ExpressionRule.java passes the user-controlled EXPRESSION value directly to scriptEngine.eval, where Nashorn exposes Java classes and system resources without validation or a sandbox. Administrative alarm-creation access is required, and execution occurs when the stored rule is evaluated manually or by the scheduler, granting the application process's file, command, and network privileges.

The record

CVE
CVE-2026-3968
Published
Mar 12, 2026
Updated
Mar 12, 2026
Vendor
Autohome, Inc.
Product
Frostmourne
Classifications
CWE-94, CWE-74, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Autohome, Inc. · Frostmourneversion=1.0

Published CVSS scores

6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
5.3VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059.007JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo