CVE-2026-94374: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-qg5m-5m7w-mf5x
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CWE-472
Published
Advisory Summary

CVE-2026-94374 is a HIGH security vulnerability vulnerability (CWE-472: External Control of Assumed-Immutable Web Parameter) affecting Software libraries in the Maven ecosystem. The weakness occurs when the web application does not sufficiently verify inputs that are assumed to be immutable but are actually externally controllable, such as hidden form fields.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-94374 at a Glance

CVE Identifier CVE-2026-94374
GHSA Identifier GHSA-qg5m-5m7w-mf5x
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-472: External Control of Assumed-Immutable Web Parameter
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-94374

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-94374, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-472: External Control of Assumed-Immutable Web Parameter, where the web application does not sufficiently verify inputs that are assumed to be immutable but are actually externally controllable, such as hidden form fields. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

MISP contains an insecure direct object reference vulnerability in the processModuleResultsData method of the Event model. When processing module results, the code iterates over EventReport entries supplied in the resolved data and saves each one. Unlike the adjacent attribute and object processing loops, the report loop did not unset the client-supplied 'id' field before calling save(). Because the MISP EventReport model's create() method does not strip the id field, an authenticated user with permission to submit module results could include an 'id' value referencing an existing report belonging to a different event. Upon save(), the ORM would update that existing row rather than insert a new one, allowing the attacker to   - read the content of another event's report by reparenting it into their own event  - overwrite the report's fields with attacker-controlled data  - change the report's event_id to redirect ownership.  This constitutes an authorization bypass through a user-controlled key, enabling cross-event data disclosure and integrity compromise. The vulnerability requires an authenticated session with the ability to invoke module result processing on an event. Version affected: <2.5.47

References

NVD — CVE-2026-94374 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-94374
Security Fix Commit FIX COMMIT
https://github.com/MISP/MISP/commit/4c1a03b20

Frequently Asked Questions

What is CVE-2026-94374?
CVE-2026-94374 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-472: External Control of Assumed-Immutable Web Parameter.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-94374?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-94374?
CVE-2026-94374 is classified under CWE-472: External Control of Assumed-Immutable Web Parameter (The web application does not sufficiently verify inputs that are assumed to be immutable but are actually externally controllable, such as hidden form fields.).
How can I check Maven dependencies for CVE-2026-94374?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qg5m-5m7w-mf5x",
  "modified" : "2026-09-21T15:32:00Z",
  "published" : "2026-09-21T15:32:00Z",
  "aliases" : [ "CVE-2026-94374" ],
  "details" : "MISP contains an insecure direct object reference vulnerability in the processModuleResultsData method of the Event model. When processing module results, the code iterates over EventReport entries supplied in the resolved data and saves each one. Unlike the adjacent attribute and object processing loops, the report loop did not unset the client-supplied 'id' field before calling save(). Because the MISP EventReport model's create() method does not strip the id field, an authenticated user with permission to submit module results could include an 'id' value referencing an existing report belonging to a different event. Upon save(), the ORM would update that existing row rather than insert a new one, allowing the attacker to \n\n - read the content of another event's report by reparenting it into their own event\n - overwrite the report's fields with attacker-controlled data\n - change the report's event_id to redirect ownership. \n\n\n\n\nThis constitutes an authorization bypass through a user-controlled key, enabling cross-event data disclosure and integrity compromise. The vulnerability requires an authenticated session with the ability to invoke module result processing on an event.\n\nVersion affected: <2.5.47",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:H/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"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-94374"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/MISP/MISP/commit/4c1a03b20"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-472" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-21T13:17:12Z"
  }
}