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Date: Tue, 25 May 2021 21:32:35 +0800
From: PengHui Li <>
Subject: CVE-2021-22160 Apache Pulsar Information Disclosure

CVE-2021-22160 Apache Pulsar Information Disclosure

Severity: High

Versions Affected:
Apache Pulsar < 2.7.1

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).

Users of the affected versions should apply one of the following
Upgrade to Apache Pulsar 2.7.1 or later

This issue was identified by Peter Stöckli

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