{"id":"CVE-2026-56207","title":"Apache Impala: SAML authentication bypass via forged bearer token","summary":"Signature of Bearer token is not verified in last step of SAML2 authentication for Impala's hs2-http interface, allowing altering user name and acting as another user.\n\n\n\nThis issue affects Apache Impala: >=4.0.0.\n\n\n\nUsers are recommende…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"adp","cwe":["CWE-347"],"vendor":"Apache Software Foundation","product":"Apache Impala","affected":["apache_impala >= 4.0.0 <= 4.5.1"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-10T17:57:18.875085Z"},"published":"2026-09-09","updated":"2026-09-10","sourceUpdated":"2026-09-10T17:58:21.228Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-56207","references":[{"url":"https://lists.apache.org/thread/20cov78py0zqzx7dyq39ktythkwn91zs"}],"tags":["cve.org"],"epss":0.00468,"epssPercentile":0.39573,"ingestedAt":"2026-09-11T14:42:19.863Z","slug":"CVE-2026-56207","body":"## Overview\n\nSignature of Bearer token is not verified in last step of SAML2 authentication for Impala's hs2-http interface, allowing altering user name and acting as another user.\n\n\n\nThis issue affects Apache Impala: >=4.0.0.\n\n\n\nUsers are recommended to upgrade to version 4.5.2, which fixes this issue.\n\n## Affected\n\n- `apache_impala >= 4.0.0 <= 4.5.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}