Detections
Analytics

Echo: org.apache.kafka:kafka-clients: security update to 4.1.2

high Tenable Self-Hosted Container Security Plugin ID 455183

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - A possible security vulnerability has been identified in Apache Kafka. By default, the broker property
 `sasl.oauthbearer.jwt.validator.class` is set to
 `org.apache.kafka.common.security.oauthbearer.DefaultJwtValidator`. It accepts any JWT token without
 validating its signature, issuer, or audience. An attacker can generate a JWT token from any issuer with
 the `preferred_username` set to any user, and the broker will accept it. We advise the Kafka users using
 kafka v4.1.0 or v4.1.1 to set the config `sasl.oauthbearer.jwt.validator.class` to
 `org.apache.kafka.common.security.oauthbearer.BrokerJwtValidator` explicitly to avoid this vulnerability.
 Since Kafka v4.1.2 and v4.2.0 and later, the issue is fixed and will correctly validate the JWT token.
 (CVE-2026-33557)

Solution

Update the org.apache.kafka:kafka-clients library and its related packages to version 4.1.2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-33557

Plugin Details

Severity: High

ID: 455183

Version: Revision 1.2

Type: Local

Published: 10/1/2026

Updated: 10/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3.9

Percentile: 52.78

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2026-33557

CVSS v3

Risk Factor: High

Base Score: 8.6

Temporal Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 4/20/2026

Reference Information

CVE: CVE-2026-33557