{"cve":"CVE-2019-10201","nvd":{"published":"2019-08-14T17:15:11.143","modified":"2026-06-17T02:10:28.757","status":"Modified","description":"It was found that Keycloak's SAML broker, versions up to 6.0.1, did not verify missing message signatures. If an attacker modifies the SAML Response and removes the <Signature> sections, the message is still accepted, and the message can be modified. An attacker could use this flaw to impersonate other users and gain access to sensitive information.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":8.1},"cwes":["CWE-347","CWE-592"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10201","https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10201"],"products":["redhat:keycloak","redhat:single_sign-on"],"source":"nvd","synced_at":"2026-10-19T20:58:11.797917892+00:00"},"epss":{"cve":"CVE-2019-10201","score":0.00714,"percentile":0.53707,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-4fgq-gq9g-3rw7","url":"https://osv.dev/vulnerability/GHSA-4fgq-gq9g-3rw7","summary":"Improper Verification of Cryptographic Signature in keycloak","modified":"2023-11-08T04:00:43.044313Z","packages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-core","purl":"pkg:maven/org.keycloak/keycloak-core","ranges":["<7.0.0"],"fixed":["7.0.0"]}]}],"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."]}