CVE-2025-30677Network attack vector

Credential disclosure via plaintext configuration logging

Published Apr 9, 2025 · Updated Apr 9, 2025

Information exposure in Apache Pulsar IO Kafka connectors before 3.0.11, 3.3.6, and 4.0.4 allows remote authenticated users to read Kafka credentials. The source connector, sink connector, and adaptor sink write sensitive Kafka configuration properties into application logs without redaction. Access to those logs is required, and the exposed values disclose credentials used to authenticate to Kafka.

CVSS severity6.3
Medium
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Apache Pulsar IO Kafka connectors before 3.0.11, 3.3.6, and 4.0.4 allows remote authenticated users to read Kafka credentials. The source connector, sink connector, and adaptor sink write sensitive Kafka configuration properties into application logs without redaction. Access to those logs is required, and the exposed values disclose credentials used to authenticate to Kafka.

The record

CVE
CVE-2025-30677
Published
Apr 9, 2025
Updated
Apr 9, 2025
Vendor
The Apache Software Foundation
Product
Apache Pulsar IO Kafka Connect Adaptor
Classifications
CWE-532, T1552.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 9, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.3.0 <3.0.11
  2. Affected versionversion=3.1.0 <3.3.6
  3. Affected versionversion=4.0.0 <4.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Pulsar IO Kafka Connect Adaptorversion=2.3.0 <3.0.11; version=3.1.0 <3.3.6; version=4.0.0 <4.0.4
The Apache Software Foundation · Apache Pulsar IO Kafka Connectorversion=2.3.0 <3.0.11; version=3.1.0 <3.3.6; version=4.0.0 <4.0.4

Published CVSS scores

6.3Apache Software FoundationCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552.001Unsecured Credentials: Credentials In Files

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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