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TI-2026-82055 Aliases CVE-2026-116593GHSA-mf84-q3cw-6ch9

Kafka Connect validate endpoint exposes resolved configuration values

Priority LOW 38CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-200.

Summary

Apache Kafka from 2.4.0 before 4.2.2 and from 4.3.0 before 4.3.2 is affected. Kafka Connect resolves sensitive configuration values through its configuration providers during connector validation, and the REST API validation endpoint returns them in plaintext (CWE-200). An attacker with low privileges and access to that endpoint can read plaintext values from any configuration provider installed on a Connect worker.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

Apache Kafka Connect has the /connector-plugins/{connector-type}/config/validate endpoint on its REST API to validate connector configurations. Apache Kafka Connect also support Configuration Providers which enable to hide the values of sensitive configuration and only resolve them at runtime.  An attacker with access to the validate endpoint can use it to resolve and return plaintext values via any of the configuration providers installed on a Connect worker. Users are recommended to upgrade to version 4.2.2, 4.3.2, 4.4.0 or above, which fix this issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00472 41st percentileScored 2026-11-07
Fix Fixed Apache Kafka (Apache Software Foundation): 4.2.2, 4.3.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Kafka2.4.0 to before 4.2.2; 4.3.0 to before 4.3.24.2.2, 4.3.2Patch availableCNA
  • Apache Kafka VendorApache Affected 2.4.0 to before 4.2.2; 4.3.0 to before 4.3.2 Fixed in 4.2.2, 4.3.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:apache:kafka:*:*:*:*:*:*:*:*——Apache
  • cpe:2.3:a:apache:kafka:*:*:*:*:*:*:*:* Versions — — ·Apache

Remediation

Upgrade Apache Kafka to version 4.2.2 or 4.3.2, or to 4.4.0 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Apache Kafka (Apache Software Foundation) Fixed in 4.2.2, 4.3.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apache Kafka 4.2.2, 4.3.2

    3 records Highest priority Priority MEDIUM 1 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-82054 Authentication bypass in Apache Kafka Connect admin REST APIPriority MEDIUM 41
    • TI-2026-82021 Incorrect operator in Kafka FetchSnapshot enables controller crashPriority LOW 29
    Show all 3 records →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-116593
  2. 2026-10-28 Alias added: GHSA-mf84-q3cw-6ch9
  3. 2026-10-30 1 new reference · CNA
  4. 2026-11-05 CVSS score added · CISA ADP
  5. 2026-11-05 Weakness changed · CISA ADP
  6. 2026-11-05 CISA SSVC decision points changed
  7. 2026-11-06 Affected versions changed · Red Hat
  8. 2026-11-06 CVSS score added · Red Hat

References

Advisory 1

Other 1

  • TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
  • TI-2024-30292 Apache OFBiz: Confused controller-view authorization logic (forced browsing) KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-26062 Apache OFBiz: Unauthenticated endpoint could allow execution of screen rendering code KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-21190 Apache OFBiz: Path traversal leading to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-18186 Apache HugeGraph-Server: Command execution in gremlin KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-25106 Deserialization of untrusted data in Apache ActiveMQ KEVCVSS 3.1CRITICAL 10.0
See all 4053 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences