Low severity3.1NVD Advisory· Published Jan 26, 2026· Updated Apr 15, 2026
CVE-2026-1190
CVE-2026-1190
Description
A flaw was found in Keycloak's SAML brokering functionality. When Keycloak is configured as a client in a Security Assertion Markup Language (SAML) setup, it fails to validate the NotOnOrAfter timestamp within the SubjectConfirmationData. This allows an attacker to delay the expiration of SAML responses, potentially extending the time a response is considered valid and leading to unexpected session durations or resource consumption.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
org.keycloak:keycloak-servicesMaven | <= 26.5.2 | — |
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
7- github.com/advisories/GHSA-63v5-26vq-m4vmghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-1190ghsaADVISORY
- access.redhat.com/errata/RHSA-2026:3947nvdWEB
- access.redhat.com/errata/RHSA-2026:3948nvdWEB
- access.redhat.com/security/cve/CVE-2026-1190nvdWEB
- bugzilla.redhat.com/show_bug.cginvdWEB
- github.com/keycloak/keycloak/issues/45646ghsaWEB
News mentions
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