CVE-2026-3047: Authentication Bypass by Primary Weakness in Red Hat Red Hat build of Keycloak 26.2
A flaw was found in org.keycloak.broker.saml. When a disabled Security Assertion Markup Language (SAML) client is configured as an Identity Provider (IdP)-initiated broker landing target, it can still complete the login process and establish a Single Sign-On (SSO) session. This allows a remote attacker to gain unauthorized access to other enabled clients without re-authentication, effectively bypassing security restrictions.
AI Analysis
Technical Summary
The vulnerability exists in the org.keycloak.broker.saml component of Red Hat build of Keycloak 26.2. When a disabled SAML client is set as an IdP-initiated broker landing target, it improperly allows completion of the login process and establishment of an SSO session. This results in an authentication bypass, enabling unauthorized access to other enabled clients without requiring re-authentication. The CVSS 3.1 base score is 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating a network exploitable flaw with high impact on confidentiality, integrity, and availability. Red Hat has issued security advisories and released updated Keycloak 26.2.14 images to fix this issue.
Potential Impact
Exploitation of this vulnerability allows a remote attacker with low privileges to bypass authentication controls by leveraging a disabled SAML client configured as an IdP-initiated broker landing target. This leads to unauthorized access to other enabled clients without re-authentication, compromising confidentiality, integrity, and availability of affected systems.
Mitigation Recommendations
Red Hat has released updated images for Red Hat build of Keycloak 26.2.14 that address this vulnerability. Users should back up their existing installations and apply the update to remediate the issue. No other mitigation or workaround is indicated by the vendor advisories. Patch status: official fix available in version 26.2.14.
CVE-2026-3047: Authentication Bypass by Primary Weakness in Red Hat Red Hat build of Keycloak 26.2
Description
A flaw was found in org.keycloak.broker.saml. When a disabled Security Assertion Markup Language (SAML) client is configured as an Identity Provider (IdP)-initiated broker landing target, it can still complete the login process and establish a Single Sign-On (SSO) session. This allows a remote attacker to gain unauthorized access to other enabled clients without re-authentication, effectively bypassing security restrictions.
CVSS v3.1
Score 8.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability exists in the org.keycloak.broker.saml component of Red Hat build of Keycloak 26.2. When a disabled SAML client is set as an IdP-initiated broker landing target, it improperly allows completion of the login process and establishment of an SSO session. This results in an authentication bypass, enabling unauthorized access to other enabled clients without requiring re-authentication. The CVSS 3.1 base score is 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating a network exploitable flaw with high impact on confidentiality, integrity, and availability. Red Hat has issued security advisories and released updated Keycloak 26.2.14 images to fix this issue.
Potential Impact
Exploitation of this vulnerability allows a remote attacker with low privileges to bypass authentication controls by leveraging a disabled SAML client configured as an IdP-initiated broker landing target. This leads to unauthorized access to other enabled clients without re-authentication, compromising confidentiality, integrity, and availability of affected systems.
Mitigation Recommendations
Red Hat has released updated images for Red Hat build of Keycloak 26.2.14 that address this vulnerability. Users should back up their existing installations and apply the update to remediate the issue. No other mitigation or workaround is indicated by the vendor advisories. Patch status: official fix available in version 26.2.14.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-02-23T17:30:53.926Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/errata/RHSA-2026:3925","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:3926","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:3947","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:3948","vendor":"Red Hat"},{"url":"https://access.redhat.com/security/cve/CVE-2026-3047","vendor":"Red Hat"}]
Threat ID: 69a9d16b61e8e69ef5d12497
Added to database: 03/05/2026, 18:54:35 UTC
Last enriched: 07/15/2026, 09:07:07 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 428
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