What is CVE-2025-30677?

CVE-2025-30677 is a medium-severity security vulnerability in org.apache.pulsar:pulsar-io-kafka-connect-adaptor (maven), affecting versions < 3.0.11. It is fixed in 3.0.11, 3.3.6, 4.0.4.

How severe is CVE-2025-30677?

CVE-2025-30677 has a CVSS score of 6.5 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Which packages are affected by CVE-2025-30677?

org.apache.pulsar:pulsar-io-kafka-connect-adaptor (maven) versions < 3.0.11; org.apache.pulsar:pulsar-io-kafka (maven) versions < 3.0.11.

Is there a fix for CVE-2025-30677?

Yes. CVE-2025-30677 is fixed in 3.0.11, 3.3.6, 4.0.4. Upgrade to this version or later.

Is CVE-2025-30677 exploitable, and should I be worried?

Whether CVE-2025-30677 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2025-30677 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

CVE-2025-30677

Q: How severe is CVE-2025-30677?

CVE-2025-30677 has a CVSS score of 6.5 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Q: Which packages are affected by CVE-2025-30677?

org.apache.pulsar:pulsar-io-kafka-connect-adaptor (maven) versions < 3.0.11; org.apache.pulsar:pulsar-io-kafka (maven) versions < 3.0.11.

Q: Is there a fix for CVE-2025-30677?

Yes. CVE-2025-30677 is fixed in 3.0.11, 3.3.6, 4.0.4. Upgrade to this version or later.

Q: Is CVE-2025-30677 exploitable, and should I be worried?

Whether CVE-2025-30677 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether CVE-2025-30677 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix CVE-2025-30677?

Upgrade: org.apache.pulsar:pulsar-io-kafka-connect-adaptor to 3.0.11 or later, org.apache.pulsar:pulsar-io-kafka-connect-adaptor to 3.3.6 or later, org.apache.pulsar:pulsar-io-kafka-connect-adaptor to 4.0.4 or later, org.apache.pulsar:pulsar-io-kafka to 3.0.11 or later, org.apache.pulsar:pulsar-io-kafka to 3.3.6 or later, org.apache.pulsar:pulsar-io-kafka to 4.0.4 or later.

Summary

Apache Pulsar Kafka Connector Logs Sensitive Information in Application Logs

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.

Impact

CVE-2025-30677 has a CVSS score of 6.5 (Medium). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (3.0.11, 3.3.6, 4.0.4); upgrading removes the vulnerable code path.

Affected versions

org.apache.pulsar:pulsar-io-kafka-connect-adaptor (< 3.0.11) org.apache.pulsar:pulsar-io-kafka-connect-adaptor (>= 3.3.0, < 3.3.6) org.apache.pulsar:pulsar-io-kafka-connect-adaptor (>= 4.0.0, < 4.0.4) org.apache.pulsar:pulsar-io-kafka (< 3.0.11) org.apache.pulsar:pulsar-io-kafka (>= 3.3.0, < 3.3.6) org.apache.pulsar:pulsar-io-kafka (>= 4.0.0, < 4.0.4)

Security releases

org.apache.pulsar:pulsar-io-kafka-connect-adaptor → 3.0.11 (maven) org.apache.pulsar:pulsar-io-kafka-connect-adaptor → 3.3.6 (maven) org.apache.pulsar:pulsar-io-kafka-connect-adaptor → 4.0.4 (maven) org.apache.pulsar:pulsar-io-kafka → 3.0.11 (maven) org.apache.pulsar:pulsar-io-kafka → 3.3.6 (maven) org.apache.pulsar:pulsar-io-kafka → 4.0.4 (maven)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

Upgrade the following packages to resolve this vulnerability:

org.apache.pulsar:pulsar-io-kafka-connect-adaptor to 3.0.11 or later; org.apache.pulsar:pulsar-io-kafka-connect-adaptor to 3.3.6 or later; org.apache.pulsar:pulsar-io-kafka-connect-adaptor to 4.0.4 or later; org.apache.pulsar:pulsar-io-kafka to 3.0.11 or later; org.apache.pulsar:pulsar-io-kafka to 3.3.6 or later; org.apache.pulsar:pulsar-io-kafka to 4.0.4 or later

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

What is CVE-2025-30677? CVE-2025-30677 is a medium-severity security vulnerability in org.apache.pulsar:pulsar-io-kafka-connect-adaptor (maven), affecting versions < 3.0.11. It is fixed in 3.0.11, 3.3.6, 4.0.4.
How severe is CVE-2025-30677? CVE-2025-30677 has a CVSS score of 6.5 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Which packages are affected by CVE-2025-30677?
- org.apache.pulsar:pulsar-io-kafka-connect-adaptor (maven) (versions < 3.0.11)
- org.apache.pulsar:pulsar-io-kafka (maven) (versions < 3.0.11)
Is there a fix for CVE-2025-30677? Yes. CVE-2025-30677 is fixed in 3.0.11, 3.3.6, 4.0.4. Upgrade to this version or later.
Is CVE-2025-30677 exploitable, and should I be worried? Whether CVE-2025-30677 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2025-30677 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2025-30677?
- Upgrade org.apache.pulsar:pulsar-io-kafka-connect-adaptor to 3.0.11 or later
- Upgrade org.apache.pulsar:pulsar-io-kafka-connect-adaptor to 3.3.6 or later
- Upgrade org.apache.pulsar:pulsar-io-kafka-connect-adaptor to 4.0.4 or later
- Upgrade org.apache.pulsar:pulsar-io-kafka to 3.0.11 or later
- Upgrade org.apache.pulsar:pulsar-io-kafka to 3.3.6 or later
- Upgrade org.apache.pulsar:pulsar-io-kafka to 4.0.4 or later