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Security Policy

The Pulsar community follows the ASF security vulnerability handling process.

To report a new vulnerability you have discovered, please follow the ASF security vulnerability reporting process. To report a vulnerability for Pulsar, contact the Apache Security Team. When reporting a vulnerability to, you can copy your email to to send your report to the Apache Pulsar Project Management Committee. This is a private mailing list.

It is the responsibility of the security vulnerability handling project team (Apache Pulsar PMC in most cases) to make public security vulnerability announcements. You can follow announcements on the mailing list. For instructions on how to subscribe, please see

Security advisories


  • 2024-04-02 CVE-2024-29834 Improper Authorization For Namespace and Topic Management Endpoints
  • 2024-03-12 CVE-2022-34321 Improper Authentication for Pulsar Proxy Statistics Endpoint
  • 2024-03-12 CVE-2024-27135 Improper Input Validation in Pulsar Function Worker allows Remote Code Execution
  • 2024-03-12 CVE-2024-27317 Pulsar Functions Worker's Archive Extraction Vulnerability Allows Unauthorized File Modification
  • 2024-03-12 CVE-2024-27894 Pulsar Functions Worker Allows Unauthorized File Access and Unauthorized HTTP/HTTPS Proxying
  • 2024-03-12 CVE-2024-28098 Improper Authorization For Topic-Level Policy Management
  • 2024-02-07 CVE-2023-51437 Timing attack in SASL token signature verification


  • 2023-12-20 CVE-2023-37544 Improper Authentication for WebSocket Proxy Endpoint Allows DoS
  • 2023-07-13 CVE-2023-31007 Broker does not always disconnect client when authentication data expires
  • 2023-07-12 CVE-2023-30428 Incorrect Authorization Validation for Rest Producer
  • 2023-07-12 CVE-2023-30429 Incorrect Authorization for Function Worker when using mTLS Authentication through Pulsar Proxy
  • 2023-07-12 CVE-2023-37579 Incorrect Authorization for Function Worker Can Leak Sink/Source Credentials


  • 2022-01-31 CVE-2021-41571 Pulsar Admin API allows access to data from other tenants using getMessageById API
  • 2022-09-22 CVE-2022-24280 Apache Pulsar Proxy target broker address isn't validated
  • 2022-09-22 CVE-2022-33681 Improper Hostname Verification in Java Client and Proxy can expose authentication data via MITM
  • 2022-09-22 CVE-2022-33682 Disabled Hostname Verification makes Brokers, Proxies vulnerable to MITM attack
  • 2022-09-22 CVE-2022-33683 Disabled Certificate Validation makes Broker, Proxy Admin Clients vulnerable to MITM attack
  • 2022-11-03 CVE-2022-33684 Apache Pulsar C++/Python OAuth Clients prior to 3.0.0 were vulnerable to an MITM attack due to Disabled Certificate Validation


  • 2021-05-25 CVE-2021-22160 Authentication with JWT allows use of "none"-algorithm