Skip to content

NuytsTech Security

  • Home
  • Terms of Use
    • Privacy Policy
  • Blog
  • Cloud Hosting
  • Contact

NuytsTech Security

  • Home
  • Terms of Use
    • Privacy Policy
  • Blog
  • Cloud Hosting
  • Contact
  • Vulnerabilities

CVE-2021-22160

by Fred · 26/05/2021

If Apache Pulsar is configured to authenticate clients using tokens based on JSON Web Tokens (JWT), the signature of the token is not validated if the algorithm of the presented token is set to "none". This allows an attacker to connect to Pulsar instances as any user (incl. admins).

Date published : 2021-05-26

https://lists.apache.org/thread.html/r347650d15a3e9c5f58b83e918b6ad6dedc2a63d3eb63da8e6a7be87e%40%3Cusers.pulsar.apache.org%3E

https://lists.apache.org/thread.html/r9a12b4da2f26ce9b8f7e7117a879efaa973dab7e54717bbc7923fab1%40%3Cdev.pulsar.apache.org%3E

Share this:

  • Click to share on X (Opens in new window) X
  • Click to share on Bluesky (Opens in new window) Bluesky
  • Click to share on Facebook (Opens in new window) Facebook
  • Click to share on LinkedIn (Opens in new window) LinkedIn
  • Click to share on Threads (Opens in new window) Threads
  • Click to share on Mastodon (Opens in new window) Mastodon

Similar

Tags: Cybersecurity Alert

  • Next story CVE-2020-10145
  • Previous story CVE-2016-20011

Recent Posts

  • CVE-2025-6081
  • CVE-2025-5967
  • CVE-2025-6940
  • CVE-2025-6939
  • CVE-2025-6938
  • CVE-2025-53096
  • CVE-2025-53095
  • CVE-2025-53003
  • CVE-2025-6937
  • CVE-2025-53005
  • CVE-2025-36056
  • CVE-2025-2141
  • CVE-2025-6936
  • CVE-2025-6935
  • CVE-2025-6932
  • CVE-2025-6931
  • CVE-2025-6930
  • CVE-2025-6554
  • CVE-2025-6929
  • CVE-2025-53004
  • CVE-2025-49521
  • CVE-2025-49520
  • CVE-2025-32463
  • CVE-2025-32462
  • CVE-2025-52997
  • CVE-2025-52996
  • CVE-2025-52995
  • CVE-2025-52901
  • CVE-2025-52491
  • CVE-2025-49493

Categories

  • Critical cyberalert
  • Vulnerabilities

Tags

CISA Cybersecurity Alert Shields Up

© 1999-2025 NUYTSTECH. All Rights Reserved. Use of the CVE (Common Vulnerabilities and Exposures) from this non-profit website are subject to the terms of use.

We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.