CVE-2026-14621: Software Security Vulnerability Vulnerability

LOW
Advisory Identifier: GHSA-pqmh-9h5r-56pf
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CVSS 3.1
CWE-488
Published
Advisory Summary

CVE-2026-14621 is a LOW (CVSS 3.1) security vulnerability vulnerability (CWE-488: Exposure of Data Element to Wrong Session) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not sufficiently enforce boundaries between the states of different sessions, causing data to be provided to, or used by, the wrong session.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-14621 at a Glance

CVE Identifier CVE-2026-14621
GHSA Identifier GHSA-pqmh-9h5r-56pf
Severity LOW
CVSS v3.1 Base Score 3.1
CWE Classification CWE-488: Exposure of Data Element to Wrong Session
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.1

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:N/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 None (I:N)
Availability None (A:N)

How to Fix CVE-2026-14621

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-2026-14621, 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-488: Exposure of Data Element to Wrong Session, where the product does not sufficiently enforce boundaries between the states of different sessions, causing data to be provided to, or used by, the wrong session. 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

A vulnerability has been found in FederatedAI FATE up to 2.2.0. This affects the function QueuePushReqStreamObserver.initEggroll of the file java/osx/osx-broker/src/main/java/org/fedai/osx/broker/grpc/QueuePushReqStreamObserver.java of the component OSX Broker. Such manipulation of the argument rollSiteSessionId/dstRole/dstPartyId leads to exposure of data element to wrong session. The attack can be executed remotely. A high complexity level is associated with this attack. It is indicated that the exploitability is difficult. The exploit has been disclosed to the public and may be used. The pull request to fix this issue awaits acceptance.

References

NVD — CVE-2026-14621 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-14621
Software Source Repository REPOSITORY
https://github.com/FederatedAI/FATE/issues/5791
Software Source Repository REPOSITORY
https://github.com/FederatedAI/FATE/pull/5792
Software Source Repository REPOSITORY
https://github.com/FederatedAI/FATE
vuldb.com/cve/cve-2026-14621 WEB
https://vuldb.com/cve/CVE-2026-14621
vuldb.com/submit/844900 WEB
https://vuldb.com/submit/844900
vuldb.com/vuln/376137 WEB
https://vuldb.com/vuln/376137
vuldb.com/vuln/376137/cti WEB
https://vuldb.com/vuln/376137/cti

Frequently Asked Questions

What is CVE-2026-14621?
CVE-2026-14621 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-488: Exposure of Data Element to Wrong Session.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-14621?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-14621?
CVE-2026-14621 has a CVSS v3.1 base score of 3.1 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2026-14621?
CVE-2026-14621 is classified under CWE-488: Exposure of Data Element to Wrong Session (The product does not sufficiently enforce boundaries between the states of different sessions, causing data to be provided to, or used by, the wrong session.).
How can I check Maven dependencies for CVE-2026-14621?
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-pqmh-9h5r-56pf",
  "modified" : "2026-07-04T09:31:45Z",
  "published" : "2026-07-04T09:31:45Z",
  "aliases" : [ "CVE-2026-14621" ],
  "details" : "A vulnerability has been found in FederatedAI FATE up to 2.2.0. This affects the function QueuePushReqStreamObserver.initEggroll of the file java/osx/osx-broker/src/main/java/org/fedai/osx/broker/grpc/QueuePushReqStreamObserver.java of the component OSX Broker. Such manipulation of the argument rollSiteSessionId/dstRole/dstPartyId leads to exposure of data element to wrong session. The attack can be executed remotely. A high complexity level is associated with this attack. It is indicated that the exploitability is difficult. The exploit has been disclosed to the public and may be used. The pull request to fix this issue awaits acceptance.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/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:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-14621"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FederatedAI/FATE/issues/5791"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FederatedAI/FATE/pull/5792"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FederatedAI/FATE"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/cve/CVE-2026-14621"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/submit/844900"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/376137"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/376137/cti"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-488" ],
    "severity" : "LOW",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-04T09:16:27Z"
  }
}