CVE-2025-30677: Apache Pulsar IO Kafka Connector, Apache Pulsar IO Kafka Connect Adaptor: Sensitive information logged in Pulsar's Apache Kafka Connectors
First published: Wed Apr 09 2025(Updated: )
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.
Credit: security@apache.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Apache Pulsar IO Kafka Connect Adaptor | <3.0.11 | |
| Apache Pulsar IO Kafka Connector | <3.3.6 | |
| Apache Pulsar IO Kafka Connect Adaptor | <4.0.4 | |
| maven/org.apache.pulsar:pulsar-io-kafka | >=4.0.0<4.0.4 | 4.0.4 |
| maven/org.apache.pulsar:pulsar-io-kafka | >=3.3.0<3.3.6 | 3.3.6 |
| maven/org.apache.pulsar:pulsar-io-kafka | <3.0.11 | 3.0.11 |
| maven/org.apache.pulsar:pulsar-io-kafka-connect-adaptor | >=4.0.0<4.0.4 | 4.0.4 |
| maven/org.apache.pulsar:pulsar-io-kafka-connect-adaptor | >=3.3.0<3.3.6 | 3.3.6 |
| maven/org.apache.pulsar:pulsar-io-kafka-connect-adaptor | <3.0.11 | 3.0.11 |
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Reference Links
- https://pulsar.apache.org/security/
- https://lists.apache.org/thread/zv5fwwrh374r1p5cmksxcd40ssxxko3d
- http://www.openwall.com/lists/oss-security/2025/04/09/2
- https://nvd.nist.gov/vuln/detail/CVE-2025-30677
- https://pulsar.apache.org/security
- https://github.com/apache/pulsar/pull/24128
- https://github.com/advisories/GHSA-rcqj-3fmp-5cqx (Advisory)
Frequently Asked Questions
What is the severity of CVE-2025-30677?
CVE-2025-30677 is considered a significant security vulnerability due to the exposure of sensitive configuration properties in plain text.
How do I fix CVE-2025-30677?
To fix CVE-2025-30677, update Apache Pulsar IO Kafka Connector or Kafka Connect Adaptor to version 3.0.11 or later.
What are the potential risks associated with CVE-2025-30677?
The risks include unauthorized access to sensitive data logged in plaintext, which can lead to data leakage and compromise of sensitive information.
Which versions of Apache Pulsar are affected by CVE-2025-30677?
CVE-2025-30677 affects Apache Pulsar IO Kafka Connector and Kafka Connect Adaptor versions prior to 3.0.11, 3.3.6, and 4.0.4.
How can I determine if my installation is vulnerable to CVE-2025-30677?
You can determine if your installation is vulnerable to CVE-2025-30677 by checking the version of Apache Pulsar IO Kafka Connector or Kafka Connect Adaptor you are using.
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