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High

Exposure of Sensitive Information to an Unauthorized Actor in Apache Kafka

  • Disclosed: 12.05.2020
  • Updated: 11.10.2026 11:21

When Connect workers in Apache Kafka 2.0.0, 2.0.1, 2.1.0, 2.1.1, 2.2.0, 2.2.1, or 2.3.0 are configured with one or more config providers, and a connector is created/updated on that Connect cluster to use an externalized secret variable in a substring of a connector configuration property value, then any client can issue a request to the same Connect cluster to obtain the connector's task configuration and the response will contain the plaintext secret rather than the externalized secrets variables.

Affected software

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PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.apache.kafka:kafka >= 2.0.0, < 2.0.2, >= 2.1.0, < 2.1.2, >= 2.2.0, < 2.2.2, >= 2.3.0, < 2.3.1 2.0.2, 2.1.2, 2.2.2, 2.3.1

References

CVSS score 7.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE)
CWE-319
Platform
Java / Kotlin (Maven)
Package
org.apache.kafka:kafka
Disclosed
12.05.2020
Updated
11.10.2026 11:21

Sources and licenses

OSV / GitHub Advisory Database - GHSA-6jmf-mxwf-r3jc - CC BY 4.0

Vulnerability history: org.apache.kafka:kafka

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
4
First → latest
05.2020 09.2022
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 3
  • Medium 1

Disclosures per year

  1. Apache Kafka vulnerability can lead to brokers hitting OutOfMemoryException, causing Denial of Service
    High · 7.5 CVE-2022-34917 >= 2.8.0, < 2.8.2, >= 3.0.0, < 3.0.2, >= 3.1.0, < 3.1.2, >= 3.2.0, < 3.2.3 2.8.2, 3.0.2, 3.1.2, 3.2.3
  2. Improper Input Validation in Apache Kafka
    High · 8.8 CVE-2018-17196 >= 0.11.0.0, < 2.1.1 2.1.1
  3. Improper Control of Generation of Code in Apache Kafka
    Medium · 5.4 CVE-2018-1288 >= 0.9.0.0, < 0.10.2.2, >= 0.11.0.0, < 0.11.0.3, >= 1.0.0, < 1.0.1 0.10.2.2, 0.11.0.3, 1.0.1
  4. Exposure of Sensitive Information to an Unauthorized Actor in Apache Kafka this entry
    High · 7.5 CVE-2019-12399 >= 2.0.0, < 2.0.2, >= 2.1.0, < 2.1.2, >= 2.2.0, < 2.2.2, >= 2.3.0, < 2.3.1 2.0.2, 2.1.2, 2.2.2, 2.3.1

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