Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Pulsar | >= 2.3.0, < 3.0.11 |
Related Weaknesses (CWE)
References
- https://lists.apache.org/thread/zv5fwwrh374r1p5cmksxcd40ssxxko3dMailing ListVendor Advisory
- https://pulsar.apache.org/security/Vendor Advisory
- http://www.openwall.com/lists/oss-security/2025/04/09/2Mailing ListThird Party Advisory
FAQ
What is CVE-2025-30677?
CVE-2025-30677 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 config...
How severe is CVE-2025-30677?
CVE-2025-30677 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-30677?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Pulsar.