CVE-2025-30677 Apache Pulsar Kafka Connector Logs Sensitive Information in Application Logs
Apache Pulsar Kafka connectors log sensitive credentials in plain text, exposing them to attackers with log access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-30677?
CVE-2025-30677 is a medium-severity vulnerability in Apache Pulsar IO Kafka Connect Adaptor, published on 9 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-532
Which versions are affected by CVE-2025-30677?
12 open source packages ship an affected version, including org.apache.pulsar:pulsar-io-kafka-connect-adaptor and org.apache.pulsar:pulsar-io-kafka. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.apache.pulsar:pulsar-io-kafka-connect-adaptor Maven | All versions | 3.0.11 |
org.apache.pulsar:pulsar-io-kafka-connect-adaptor Maven | All versions | 3.0.11 |
org.apache.pulsar:pulsar-io-kafka-connect-adaptor Maven | From 3.3.0 | 3.3.6 |
org.apache.pulsar:pulsar-io-kafka-connect-adaptor Maven | From 3.3.0 | 3.3.6 |
org.apache.pulsar:pulsar-io-kafka-connect-adaptor Maven | From 4.0.0 | 4.0.4 |
org.apache.pulsar:pulsar-io-kafka-connect-adaptor Maven | From 4.0.0 | 4.0.4 |
6 more packages
org.apache.pulsar:pulsar-io-kafka Maven | All versions | 3.0.11 |
org.apache.pulsar:pulsar-io-kafka Maven | All versions | 3.0.11 |
org.apache.pulsar:pulsar-io-kafka Maven | From 3.3.0 | 3.3.6 |
org.apache.pulsar:pulsar-io-kafka Maven | From 3.3.0 | 3.3.6 |
org.apache.pulsar:pulsar-io-kafka Maven | From 4.0.0 | 4.0.4 |
org.apache.pulsar:pulsar-io-kafka Maven | From 4.0.0 | 4.0.4 |
Products include Apache Pulsar.
How do I fix CVE-2025-30677?
Upgrade org.apache.pulsar:pulsar-io-kafka-connect-adaptor to a fixed version for your release line: 3.0.11, 3.3.6 or 4.0.4.
Is CVE-2025-30677 being exploited?
There is no known exploitation of CVE-2025-30677 in the wild and no public exploit code.
Other vulnerabilities in Apache Pulsar IO Kafka Connect Adaptor
- CVE-2021-22160 Authentication with JWT allows use of “none”-algorithm
- CVE-2023-30429 Apache Pulsar: Incorrect Authorization for Function Worker when using mTLS Authentication through Pulsar Proxy
- CVE-2024-27135 Apache Pulsar: Improper Input Validation in Pulsar Function Worker allows Remote Code Execution
- CVE-2024-27894 Apache Pulsar: Pulsar Functions Worker Allows Unauthorized File Access and Unauthorized HTTP/HTTPS Proxying
- CVE-2024-27317 Apache Pulsar: Pulsar Functions Worker's Archive Extraction Vulnerability Allows Unauthorized File Modification
Sources
Also known as GHSA-rcqj-3fmp-5cqx.