STRIMZI incorrect access control

published 2024-06-17 2 y ago modified 2026-07-09 4 mo ago also GHSA-q2xx-f8r3-9mg5 , EUVD-2024-2132

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits: 0; none known

Incorrect access control in the Kafka Connect REST API in the STRIMZI Project 0.41.0 and earlier allows an attacker to deny the service for Kafka Mirroring, potentially mirror the topics' content to his Kafka cluster via a malicious connector (bypassing Kafka ACL if it exists), and potentially steal Kafka SASL credentials, by querying the MirrorMaker Kafka REST API.

Patch / fix

fixed in 1

strimza_project kafka_connect_rest_api 0.41.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-36543 updated 2025-11-21 cvss 6.5

kafka: malicious connector steal Kafka SASL credentials querying the MirrorMaker Kafka REST API

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: total
Assessed: 2 y ago (2024-06-18)

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub	3.1	7.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected packages

ecosystem	package	affected	fixed in
maven	io.strimzi:strimzi	<=0.41.0	no fix listed

Affected products

strimza_project kafka_connect_rest_api

Classification

Weakness

CWE-400 Uncontrolled Resource Consumption
CWE-306 Missing Authentication for Critical Functionality

References

github.com /almounah/vulnerability-research/tree/main/CVE-2024-36543
web
nvd.nist.gov /vuln/detail/CVE-2024-36543
advisory
github.com /strimzi/strimzi-kafka-operator
package
strimzi.com
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary