---
id: CVE-2026-75880
title: >-
  An authenticated client could attach a consumer with a selector containing
  crafted wildcard usage that results in excessive evaluation during message
  delivery attempts, occupying a shared broker thread and leading to denial of
  service.


  …
summary: >-
  An authenticated client could attach a consumer with a selector containing
  crafted wildcard usage that results in excessive evaluation during message
  delivery attempts, occupying a shared broker thread and leading to denial of
  service.


  …
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-1333
vendor: apache
product: artemis
affected:
  - 'artemis >= 1.0.0, < 2.44.0'
  - 'artemis >= 2.50.0, < 2.57.0'
patched:
  - artemis 2.57.0
published: '2026-09-10'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T15:17:11.787'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-75880'
references:
  - url: 'https://lists.apache.org/thread/db34g9qoxd8p08086cr95683fkb8wm5r'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/09/10/7'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-10T17:31:34.370541Z'
epss: 0.00413
epssPercentile: 0.35271
ingestedAt: '2026-09-14T00:15:50.932Z'
---

## Overview

An authenticated client could attach a consumer with a selector containing crafted wildcard usage that results in excessive evaluation during message delivery attempts, occupying a shared broker thread and leading to denial of service.

This issue affects Apache Artemis: from 2.50.0 through 2.56.0; Apache ActiveMQ Artemis: from 1.0.0 through 2.44.0.


Users are recommended to upgrade to version 2.57.0, which fixes this issue.

## Affected

- `artemis >= 1.0.0, < 2.44.0`
- `artemis >= 2.50.0, < 2.57.0`

## Remediation

Upgrade past the affected range:

- `artemis 2.57.0`