What is CVE-2025-30677?

CVE-2025-30677 is a medium-severity vulnerability in Apache Pulsar, classified under Insertion of Sensitive Information into Log File. CVSS score: 6.5/10. Published 2025-04-09.

How severe is CVE-2025-30677?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2025-30677 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Apache Pulsar

CVE-2025-30677

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.

EPSS: 0.007 (47.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Apache Pulsar
Apache Software Foundation Pulsar Io Kafka Connect Adaptor — versions 2.3.0, 3.1.0, 4.0.0
Apache Software Foundation Pulsar Io Kafka Connector — versions 2.3.0, 3.1.0, 4.0.0

Weakness classification (CWE)

CWE-532 — Insertion of Sensitive Information into Log File

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

security@apache.org (Vendor Advisory)
security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2025-30677?: CVE-2025-30677 is a medium-severity vulnerability in Apache Pulsar, classified under Insertion of Sensitive Information into Log File. CVSS score: 6.5/10. Published 2025-04-09.
How severe is CVE-2025-30677?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2025-30677 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.