CVE-2026-2340: Software Security Vulnerability Vulnerability
MODERATECVE-2026-2340 is a MODERATE (CVSS 6.5) 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-2026-2340 at a Glance
Security Impact
CVSS: 6.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N).
How to Fix CVE-2026-2340
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.
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:treeHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-2340, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:treeAnalyze 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
References
Frequently Asked Questions
What is CVE-2026-2340?
Which Software versions are affected?
What version fixes CVE-2026-2340?
What is the CVSS score of CVE-2026-2340?
What CWE is associated with CVE-2026-2340?
How can I check Maven dependencies for CVE-2026-2340?
Machine-readable OSV JSON
OSV v1.5 Schema
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"modified" : "2026-10-15T18:31:32Z",
"published" : "2026-05-27T15:33:11Z",
"aliases" : [ "CVE-2026-2340" ],
"details" : "A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.",
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"database_specific" : {
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