CVE-2026-96872: Software Security Vulnerability Vulnerability

LOW
Advisory Identifier: GHSA-c7v9-97f3-3pxf
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CWE-280
Published
Advisory Summary

CVE-2026-96872 is a LOW security vulnerability vulnerability (CWE-280: Improper Handling of Insufficient Permissions or Privileges) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not handle or incorrectly handles when it has insufficient privileges to access resources or functionality as specified by their permissions. this may cause it to follow unexpected code paths that may leave the product in an invalid state.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-96872 at a Glance

CVE Identifier CVE-2026-96872
GHSA Identifier GHSA-c7v9-97f3-3pxf
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-280: Improper Handling of Insufficient Permissions or Privileges
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-96872

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-2026-96872, 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-280: Improper Handling of Insufficient Permissions or Privileges, where the product does not handle or incorrectly handles when it has insufficient privileges to access resources or functionality as specified by their permissions. this may cause it to follow unexpected code paths that may leave the product in an invalid state. 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

Improper handling of insufficient permissions or privileges vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension on Linux, MacOS, and Windows allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Mediawiki - WikiLambda Extension: before 1.47.0.

References

NVD — CVE-2026-96872 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-96872
gerrit.wikimedia.org/r/c/mediawiki/exten... WEB
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikiLambda/+/1326392
phabricator.wikimedia.org/t435085 WEB
https://phabricator.wikimedia.org/T435085

Frequently Asked Questions

What is CVE-2026-96872?
CVE-2026-96872 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-280: Improper Handling of Insufficient Permissions or Privileges.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-96872?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-96872?
CVE-2026-96872 is classified under CWE-280: Improper Handling of Insufficient Permissions or Privileges (The product does not handle or incorrectly handles when it has insufficient privileges to access resources or functionality as specified by their permissions. This may cause it to follow unexpected code paths that may leave the product in an invalid state.).
How can I check Maven dependencies for CVE-2026-96872?
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-c7v9-97f3-3pxf",
  "modified" : "2026-09-23T21:30:54Z",
  "published" : "2026-09-23T21:30:54Z",
  "aliases" : [ "CVE-2026-96872" ],
  "details" : "Improper handling of insufficient permissions or privileges vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension on Linux, MacOS, and Windows allows Accessing Functionality Not Properly Constrained by ACLs.\n\nThis issue affects Mediawiki - WikiLambda Extension: before 1.47.0.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:P/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:Y/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-96872"
  }, {
    "type" : "WEB",
    "url" : "https://gerrit.wikimedia.org/r/c/mediawiki/extensions/WikiLambda/+/1326392"
  }, {
    "type" : "WEB",
    "url" : "https://phabricator.wikimedia.org/T435085"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-280" ],
    "severity" : "LOW",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-23T19:19:55Z"
  }
}