CVE-2026-16103Patch(redhat / build_of_keycloak)

LOWCVSS 4.3 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch redhat build_of_keycloak systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

A flaw was found in the keycloak-services component of Keycloak. This issue is an incomplete fix for CVE-2026-9798, where brute-force protection checks were added to the Client-Initiated Backchannel Authentication (CIBA) initiation handler but were omitted from the token redemption handler. This allows an attacker with valid client credentials to obtain access and refresh tokens for a user account that has been locked due to brute-force protection, provided the authentication request was started before the lockout occurred and was approved by the user.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-305CWE-841

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • build_of_keycloak

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
Products
build_of_keycloak

1 version affected across 1 product

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-20: 1Patch / Workaround · 2026-07-20: 1Technical Details · 2026-07-20: 107-20
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • VulniPulse@vulnipulse
    Patch

    ⚠️ Linux Red Hat Build of Keycloak alert: CVE-2026-16103 (CVSS 4.3) Attackers could affect the listed product. Apply the vendor-recommended mitigation. https://vulnipulse.com/advisories/linux-cve-2026-16103 #Linux #CyberSecurity #CVE

    Post summary

    The advisory warns of CVE-2026-16103 affecting Red Hat Keycloak and recommends applying vendor mitigation, without mentioning any PoC, exploit, or active exploitation.

    0000035
    6 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appredhatbuild_of_keycloak---

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