6.5

CVE-2025-30677: apache software foundation apache pulsar io kafka connect adaptor

CVSS: 6.5v3.1MediumAnalyzed
AliasesGHSA-rcqj-3fmp-5cqx
Published 09-04-2025Last modified 09-04-2025
Open JSON

Vulnerability summary

CVE-2025-30677 is a medium (CVSS 6.5) vulnerability in apache software foundation apache pulsar io kafka connect adaptor. EPSS estimates a 0.73% chance of exploitation in the next 30 days, higher than 53.3% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.73%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-04-2025
    PublishedVulnerability first disclosed.
  2. 09-04-2025
    Last modifiedVulnerability information updated.

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 metrics

5 scores · 3 sources · 2 versions

EPSS trend

Probability

0.73%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

+0.01 pp

From 0.72% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.73%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apache software foundation2 products
Org.apache.pulsar2 products
  • pulsar-io-kafka< 3.0.11 | ≥ 3.3.0, < 3.3.6 | ≥ 4.0.0, < 4.0.4
  • pulsar-io-kafka-connect-adaptor< 3.0.11 | ≥ 3.3.0, < 3.3.6 | ≥ 4.0.0, < 4.0.4
Apache1 product
  • pulsar≥ 2.3.0, < 3.0.11 | ≥ 3.3.0, < 3.3.6 | ≥ 4.0.0, < 4.0.4

3 vendors · 5 products

References

7 links