CVE-2026-105938: Apache Pulsar 2.8.0 to before 4.0.14, 4.1.0 to before 4.2.5

Affected technology

Apache Pulsar · 2.8.0 to before 4.0.14, 4.1.0 to before 4.2.5
Apache Software Foundation

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

The source says as a result, when authentication and authorization are enabled and a namespace uses the Prefix subscription authentication mode or subscription permissions, an authenticated user with such consume permission can clear the backlog of, expire messages of, or delete a subscription that the policies would deny to that user. Vendor/CNA’s CVSS 4.0 assessment (base score 2.3/10) rates confidentiality and availability impact as none; integrity impact as low.