CVE•Published 2026-07-17•Modified 2026-09-16•0 articles on news•4 live references•NVD data

CVE-2026-16104Redhat · Build_of_keycloak

Vulnerability data via NVD (ingested)

CVSS v3.1

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS percentile

Exploit Prediction Scoring System · top 88% of all CVEs

Weaknesses (CWE)

CWE-212Improper Removal of Sensitive Information Before Storage or Transfer CWE-522Insufficiently Protected Credentials

Description

A flaw was found in the authentication configuration endpoint of the keycloak-services component, which is the core engine for Red Hat Build of Keycloak identity and access management. The issue occurs because the system fails to mask sensitive configuration values, such as reCAPTCHA secret keys, when they are requested by administrators with view-only permissions. This can lead to the exposure of third-party service credentials to unauthorized personnel or through administrative logs.

Timeline

Published 2026-07-17

Modified 2026-09-16

External references

NVD MITRE GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-16104

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Redhat Build Of Keycloak"

All exposed Redhat Build Of Keycloak instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Build Of Keycloak"

HTTP body or banner mentions "Build Of Keycloak" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-16104