CVE-2026-34020: Openmeetings parent Apache OpenMeetings Uses GET Request Vulnerability

HIGH
Advisory Identifier: GHSA-gcvm-c75m-h4p4
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CVSS 7.5
CWE-598
Published
Advisory Summary

CVE-2026-34020 is a HIGH (CVSS 7.5) apache openmeetings uses get request vulnerability (CWE-598: Use of HTTP Request With Sensitive Query String) affecting Openmeetings parent libraries in the Maven ecosystem. The issue involves apache openmeetings uses get request method with sensitive query strings. Remediation is available by upgrading affected packages to version 9.0.0.

CVE-2026-34020 at a Glance

CVE Identifier CVE-2026-34020
GHSA Identifier GHSA-gcvm-c75m-h4p4
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-598: Use of HTTP Request With Sensitive Query String
Affected Product Openmeetings parent
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

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

How to Fix CVE-2026-34020

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

org.apache.openmeetings:openmeetings-parent fixed: 9.0.0 
<dependency>
    <groupId>org.apache.openmeetings</groupId>
    <artifactId>openmeetings-parent</artifactId>
    <version>9.0.0</version>
</dependency>
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 -Dincludes=org.apache.openmeetings

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-34020, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.openmeetings

Analyze the terminal output to locate any version of Openmeetings parent in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.0.0), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.openmeetings 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-598: Use of HTTP Request With Sensitive Query String, where the web application uses an http method to process a request, but the request includes sensitive information in the query string. In Openmeetings parent, 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

Use of GET Request Method With Sensitive Query Strings vulnerability in Apache OpenMeetings. The REST login endpoint uses HTTP GET method with username and password passed as query parameters. Please check references regarding possible impact This issue affects Apache OpenMeetings: from 3.1.3 before 9.0.0. Users are recommended to upgrade to version 9.0.0, which fixes the issue.

CVE-2026-34020 Affected Openmeetings parent Versions

1 component(s)
Fixed Versions:
9.0.0
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.openmeetings:openmeetings-parent
maven/org.apache.openmeetings/openmeetings-parent
Maven
≥ 3.1.3
< 9.0.0
9.0.0

References

NVD — CVE-2026-34020 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34020
Openmeetings parent Source Repository REPOSITORY
https://github.com/apache/openmeetings
lists.apache.org/thread/2h3h9do5tp17... WEB
https://lists.apache.org/thread/2h3h9do5tp17xldr0nps1yjmkx4vs3db
owasp.org/www-community/vulne... WEB
https://owasp.org/www-community/vulnerabilities/Information_exposure_through_query_strings_in_url
Openmeetings parent Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/04/09/12

Frequently Asked Questions

What is CVE-2026-34020?
CVE-2026-34020 is a security vulnerability in Openmeetings parent involving Apache OpenMeetings Uses GET Request Method With Sensitive Query Strings under CWE-598: Use of HTTP Request With Sensitive Query String.
Which Openmeetings parent versions are affected?
Affected versions include releases prior to 9.0.0 across affected packages: org.apache.openmeetings:openmeetings-parent.
What version fixes CVE-2026-34020?
Upgrading to 9.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openmeetings-parent affected?
Yes, org.apache.openmeetings:openmeetings-parent is affected in releases prior to 9.0.0. Upgrade your dependency to 9.0.0 or later.
What is the CVSS score of CVE-2026-34020?
CVE-2026-34020 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-34020?
CVE-2026-34020 is classified under CWE-598: Use of HTTP Request With Sensitive Query String (The web application uses an HTTP method to process a request, but the request includes sensitive information in the query string.).
How can I check Maven dependencies for CVE-2026-34020?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.openmeetings'. 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-gcvm-c75m-h4p4",
  "modified" : "2026-04-10T21:35:15Z",
  "published" : "2026-04-09T18:31:27Z",
  "aliases" : [ "CVE-2026-34020" ],
  "summary" : "Apache OpenMeetings Uses GET Request Method With Sensitive Query Strings ",
  "details" : "Use of GET Request Method With Sensitive Query Strings vulnerability in Apache OpenMeetings.\n\nThe REST login endpoint uses HTTP GET method with username and password passed as query parameters. Please check references regarding possible impact\n\n\nThis issue affects Apache OpenMeetings: from 3.1.3 before 9.0.0.\n\nUsers are recommended to upgrade to version 9.0.0, which fixes the issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.openmeetings:openmeetings-parent"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.1.3"
      }, {
        "fixed" : "9.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-34020"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/openmeetings"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/2h3h9do5tp17xldr0nps1yjmkx4vs3db"
  }, {
    "type" : "WEB",
    "url" : "https://owasp.org/www-community/vulnerabilities/Information_exposure_through_query_strings_in_url"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/04/09/12"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-598" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-10T21:24:43Z",
    "nvd_published_at" : "2026-04-09T16:16:27Z"
  }
}