Red Hat Keycloak 26.6.9 Fixes SAML Signature Bypass
Tech GuruQuick Answer
Identity owners should inspect SAML HTTP-Redirect federation, deploy Red Hat build of Keycloak 26.6.9 and the corresponding OpenShift images, then verify sign-in and authorization with retained version and image evidence.
Confirm Scope And Apply The Supported Remediation
What to do now: Record Keycloak product and support stream, SAML identity providers and binding, deployment architecture, server/operator image digests, database backup and identity owners. Confirm use of SAML HTTP-Redirect and match the supported Red Hat deployment to the two errata; do not assign the same package applicability to every upstream Keycloak version. Back up configuration, applications, databases and settings. Apply Red Hat build of Keycloak 26.6.9 or the corresponding server/operator images using supported rollout and compatibility guidance. Verify active version and image digests, operator convergence, SAML sign-in and sign-out, rejection of invalid signatures, role mappings and administrative access; retain change and regression-test evidence.
Last verified: 2026-11-07 UTC. Recheck the authoritative advisory and supported distribution channel before changing production.
Scope And Authority
| Product scope | Red Hat build of Keycloak 26.6; standalone server and OpenShift server/operator images |
|---|---|
| Advisory | RHSA-2026:96040 / RHSA-2026:96039 |
| CVE | CVE-2026-117691 |
| Authoritative release date | Standalone erratum: 2026-11-07 14:47:20 UTC; image erratum: 2026-11-07 14:49:00 UTC. |
| Authority revision date | No later material revision is stated. CSAF generation times are 15:40:07 and 15:40:03 UTC, respectively. |
| Affected versions | Red Hat build of Keycloak 26.6 deployments using SAML HTTP-Redirect federation before the applicable 26.6.9 fix. The errata do not supply a complete historical affected-version range. |
| Fixed version | Red Hat build of Keycloak 26.6.9; advisory-listed Keycloak server and operator image digests on OpenShift |
| CVSS base score | 9.1 (CVSS v3.1) |
| CVSS severity | Critical (CVSS); Important (Red Hat impact) |
| Exploitation status | The cited Red Hat errata do not confirm malicious exploitation.; no exploitation claim is inferred. |
Authority-Specific Scope And Version Evidence
| RHSA-2026:96040 | Released 2026-11-07T14:47:20+00:00. Fixed: Red Hat build of Keycloak 26.6.9 |
|---|---|
| RHSA-2026:96039 | Released 2026-11-07T14:49:00+00:00. Fixed: 9Base-RHBK-26.6:rhbk/keycloak-operator-bundle@sha256:6d43917ace52331b28623246d61a202de7fd49bbc462578b7676ce0c90eeaead_amd64; 9Base-RHBK-26.6:rhbk/keycloak-rhel9-operator@sha256:003b5b770b54ee6139a598a1dfb249d7971bc863f3b926c01a7aedea59be5cbc_amd64; 9Base-RHBK-26.6:rhbk/keycloak-rhel9-operator@sha256:1be1c23fb1385c9e01ffe3b27afa9a30ad0da3b7c016623529b529ec8f548f1a_arm64; 9Base-RHBK-26.6:rhbk/keycloak-rhel9-operator@sha256:923b40198c0d38a481a76ebaf3a28b262599d12382e6d666803df37bceb3cf14_s390x; 9Base-RHBK-26.6:rhbk/keycloak-rhel9-operator@sha256:b5a575021f691de0533a43da73ec72908c6521da7326ea922977491ab281565b_ppc64le; 9Base-RHBK-26.6:rhbk/keycloak-rhel9@sha256:04b0afc934adba6f0fc62d371927f9b405555b764379a12ae2d1aee3e899fe15_s390x; 9Base-RHBK-26.6:rhbk/keycloak-rhel9@sha256:088100d6690db46248966ca581ce645a28bce379505ccf414ae309240221bb21_ppc64le; 9Base-RHBK-26.6:rhbk/keycloak-rhel9@sha256:0de6b0a3bfe5135725e33bb1da8fd22c1fc94e754814d6c3ddef92105a094116_amd64; 9Base-RHBK-26.6:rhbk/keycloak-rhel9@sha256:cadcb5911714c8ffcd851c0035f04aa399d3677579bcad825b6b296fefe0b288_arm64 |
What Changed
Red Hat releases standalone and OpenShift fixes for a parsing mismatch in SAML HTTP-Redirect signature verification that can allow takeover of federated accounts.
What To Validate Now
- Inventory. Record Keycloak product and support stream, SAML identity providers and binding, deployment architecture, server/operator image digests, database backup and identity owners.
- Establish applicability. Confirm use of SAML HTTP-Redirect and match the supported Red Hat deployment to the two errata; do not assign the same package applicability to every upstream Keycloak version.
- Remediate. Back up configuration, applications, databases and settings. Apply Red Hat build of Keycloak 26.6.9 or the corresponding server/operator images using supported rollout and compatibility guidance.
- Validate. Verify active version and image digests, operator convergence, SAML sign-in and sign-out, rejection of invalid signatures, role mappings and administrative access; retain change and regression-test evidence.
- Retain evidence. Preserve asset and owner identifiers, the applicability decision, before-and-after versions, change approval, installation output, validation results, and any exception or rollback record.
Operational Cautions
Coordinate identity-service rollout and recovery to preserve administrative access. Red Hat rates product impact Important while the CVSS base score is Critical. Temporary courtesy mitigations in the CSAF do not replace the supported fix.
Evidence To Retain
- Exact product, release stream, package or application version, enabled feature, environment, and accountable owner.
- UTC timestamps, authority revision, approved change record, installer or package-manager output, and resulting version.
- Relevant logs and monitoring evidence, test results, exceptions, compensating controls, and rollback decisions.
Related TechGeeks Resources
Authoritative References
Correction policy: If the authority changes affected versions, fixed versions, severity, exploitation information, mitigations, or required action, TechGeeks will update this notice and its verification date.
