Pulsar Connectors Log Kafka Secrets – Fixed in 3.0.11/3.3.6/4.0.4
CVE-2025-30677 Published on April 9, 2025
Apache Pulsar IO Kafka Connector, Apache Pulsar IO Kafka Connect Adaptor: Sensitive information logged in Pulsar's Apache Kafka Connectors
Apache Pulsar contains multiple connectors for integrating with Apache Kafka. The Pulsar IO Apache Kafka Source Connector, Sink Connector, and Kafka Connect Adaptor Sink Connector log sensitive configuration properties in plain text in application logs.
This vulnerability can lead to unintended exposure of credentials in log files, potentially allowing attackers with access to these logs to obtain Apache Kafka credentials. The vulnerability's impact is limited by the fact that an attacker would need access to the application logs to exploit this issue.
This issue affects Apache Pulsar IO's Apache Kafka connectors in all versions before 3.0.11, 3.3.6, and 4.0.4.
3.0.x version users should upgrade to at least 3.0.11.
3.3.x version users should upgrade to at least 3.3.6.
4.0.x version users should upgrade to at least 4.0.4.
Users operating versions prior to those listed above should upgrade to the aforementioned patched versions or newer versions.
Weakness Type
Insertion of Sensitive Information into Log File
Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.
Products Associated with CVE-2025-30677
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Affected Versions
Apache Software Foundation Apache Pulsar IO Kafka Connector:- Version 2.3.0 and below 3.0.11 is affected.
- Version 3.1.0 and below 3.3.6 is affected.
- Version 4.0.0 and below 4.0.4 is affected.
- Version 2.3.0 and below 3.0.11 is affected.
- Version 3.1.0 and below 3.3.6 is affected.
- Version 4.0.0 and below 4.0.4 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.