Detections
Analytics

SCA: security update for org.keycloak:keycloak-services (GHSA-j97h-3f8r-mrjr)

high Tenable Cloud Security Plugin ID 478259

Description

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

 - A flaw was found in Keycloak. This JWT algorithm confusion vulnerability in the JWT Authorization Grant
 flow allows an attacker with valid client credentials to bypass signature verification. By forging an
 assertion, the attacker can create unauthorized access tokens. This enables the attacker to impersonate
 any federated user linked to the affected Identity Provider, leading to unauthorized access and potential
 privilege escalation. (CVE-2026-11800)

Solution

Update the org.keycloak:keycloak-services library and its related packages to version 26.6.4 or later.

See Also

https://github.com/advisories/GHSA-j97h-3f8r-mrjr

Plugin Details

Severity: High

ID: 478259

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 11/3/2026

Updated: 11/11/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.5

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-11800

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/3/2026

Vulnerability Publication Date: 6/25/2026

Reference Information

CVE: CVE-2026-11800

cwe: CWE-347