{"cve":"CVE-2026-1190","nvd":{"published":"2026-01-26T20:16:09.813","modified":"2026-06-17T10:15:17.983","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","score":3.1},"cwes":["CWE-112"],"references":["https://access.redhat.com/errata/RHSA-2026:3947","https://access.redhat.com/errata/RHSA-2026:3948","https://access.redhat.com/security/cve/CVE-2026-1190","https://bugzilla.redhat.com/show_bug.cgi?id=2430835"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:21:16.563232421+00:00"},"epss":{"cve":"CVE-2026-1190","score":0.00415,"percentile":0.35881,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-63v5-26vq-m4vm","url":"https://osv.dev/vulnerability/GHSA-63v5-26vq-m4vm","summary":"Keycloak's missing timestamp validation allows attackers to extend SAML response validity periods","modified":"2026-09-10T03:49:54.362208935Z","packages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","purl":"pkg:maven/org.keycloak/keycloak-services","ranges":["<=26.5.2"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}