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VulnerabilityPublished

CVE-2026-118952: Red Hat streams for Apache Kafka 3 · Incorrect Authorization

Affects Red Hat streams for Apache Kafka 3Source CVE Database V5

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Not known to be exploited · CVSS 6.5 Medium.

Data as of 30 Oct 2026, 07:00 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.16.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
streams for Apache Kafka 2kroxylicious-authorizer-aclAffected–Fixed in–
streams for Apache Kafka 3kroxylicious-authorizer-aclAffected–Fixed in–

AI-suggested

The vendor advisory does not currently confirm the availability of a patch or fixed versions. Users should monitor the Red Hat advisory page for updates and apply fixes once available. Until then, review and tighten ACL configurations to minimize risk. No vendor-stated mitigations or workarounds are provided in the advisory at this time.

Description

CVE-2026-118952 is a vulnerability in the Kroxylicious ACL authorizer used in Red Hat streams for Apache Kafka 3. The flaw involves incorrect authorization due to prefix-matching logic errors, which may allow an authenticated Kafka client to access resources that should be denied, such as reading a topic. The issue arises when prefix rules overlap or apply to principals of different types incorrectly.

References

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