Severity: critical Affected versions:
- Apache Impala 4.0.0 through 4.5.1 Description: 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. This issue affects Apache Impala: >=4.0.0. Users are recommended to upgrade to version 4.5.2, which fixes this issue. Credit: Andrew Rukin (Arenadata) (reporter) References: https://impala.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-56207
