Read the docs
TI-2026-82948 Aliases CVE-2026-118952GHSA-vpwg-79f7-v3cx

Kroxylicious ACL authorizer flaw lets clients bypass access rules

Priority LOW 28CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-863.

Summary

The Kroxylicious ACL authorizer in Red Hat streams for Apache Kafka 3 is affected, and the sources do not list affected versions. Its prefix matching can apply a rule to a principal of a different type, or skip a broader matching rule when prefixes overlap. An authenticated Kafka client may access a resource, such as reading a topic, that the ACL configuration should deny, which is classified as CWE-863.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

A flaw was found in the Kroxylicious ACL authorizer. Its prefix-matching logic may apply a rule to a principal of a different type, or fail to check a broader matching rule when prefixes overlap. Depending on the ACL configuration, this may allow an authenticated Kafka client to access a resource (such as read a topic) that should be denied.

Why it matters now

EPSS 0.00231 13th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red Hatstreams for Apache Kafka 2——Not affectedCNA
Red Hatstreams for Apache Kafka 3——No fix listedCNA
  • streams for Apache Kafka 2 VendorRed Hat Affected — Fixed in — Not affected CNA
  • streams for Apache Kafka 3 VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE names CNA · 2

CPEVersionsRoleVendor
cpe:/a:redhat:amq_streams:22—Red Hat
cpe:/a:redhat:amq_streams:33—Red Hat
  • cpe:/a:redhat:amq_streams:2 Versions 2 — ·Red Hat
  • cpe:/a:redhat:amq_streams:3 Versions 3 — ·Red Hat

Remediation

The sources list no fixed version for Red Hat streams for Apache Kafka 3. Red Hat's plan for that product is none available. Red Hat streams for Apache Kafka 2 is not affected.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
streams for Apache Kafka 3AffectedNo fix yet
Not affected: 1 product
  • streams for Apache Kafka 2

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-118952
  2. 2026-10-30 Alias added: GHSA-vpwg-79f7-v3cx
  3. 2026-10-31 Priority changed: MEDIUM → LOW

References

Other 3

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

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