CVE-2026-14666: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-fvh5-w7wg-xp3g
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CVSS 4.2
CWE-1250
Published
Advisory Summary

CVE-2026-14666 is a MODERATE (CVSS 4.2) security vulnerability vulnerability (CWE-1250: Improper Preservation of Consistency Between Independent Representations of Shared State) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product has or supports multiple distributed components or sub-systems that are each required to keep their own local copy of shared data - such as state or cache - but the product does not ensure that all local copies remain consistent with each other.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-14666 at a Glance

CVE Identifier CVE-2026-14666
GHSA Identifier GHSA-fvh5-w7wg-xp3g
Severity MODERATE
CVSS v3.1 Base Score 4.2
CWE Classification CWE-1250: Improper Preservation of Consistency Between Independent Representations of Shared State
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.2

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-14666

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-2026-14666, 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-1250: Improper Preservation of Consistency Between Independent Representations of Shared State, where the product has or supports multiple distributed components or sub-systems that are each required to keep their own local copy of shared data - such as state or cache - but the product does not ensure that all local copies remain consistent with each other. 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

Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query to continue using cached row-level security policies after those changes require a different policy, via plan reuse. Stale policies continue until some other event invalidates the cache or connection termination ends the session. This permits a user to complete reads and modifications that were recently permitted but now forbidden. An attacker must tailor an attack to a particular application's pattern of privilege removal and role-specific row security policies. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

References

NVD — CVE-2026-14666 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-14666
Software Security Information SECURITY
https://www.postgresql.org/support/security/CVE-2026-14666

Frequently Asked Questions

What is CVE-2026-14666?
CVE-2026-14666 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-1250: Improper Preservation of Consistency Between Independent Representations of Shared State.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-14666?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-14666?
CVE-2026-14666 has a CVSS v3.1 base score of 4.2 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2026-14666?
CVE-2026-14666 is classified under CWE-1250: Improper Preservation of Consistency Between Independent Representations of Shared State (The product has or supports multiple distributed components or sub-systems that are each required to keep their own local copy of shared data - such as state or cache - but the product does not ensure that all local copies remain consistent with each other.).
How can I check Maven dependencies for CVE-2026-14666?
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-fvh5-w7wg-xp3g",
  "modified" : "2026-08-13T15:34:35Z",
  "published" : "2026-08-13T15:34:35Z",
  "aliases" : [ "CVE-2026-14666" ],
  "details" : "Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query to continue using cached row-level security policies after those changes require a different policy, via plan reuse.  Stale policies continue until some other event invalidates the cache or connection termination ends the session.  This permits a user to complete reads and modifications that were recently permitted but now forbidden.  An attacker must tailor an attack to a particular application's pattern of privilege removal and role-specific row security policies.  Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-14666"
  }, {
    "type" : "WEB",
    "url" : "https://www.postgresql.org/support/security/CVE-2026-14666"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1250" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-13T13:17:43Z"
  }
}