CVE-2026-56207

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.

Score

CVSS 3.1 9.8 Critical

Status

Analyzed - security@apache.org

Published

2026-09-09

Last modified

2026-09-10

Weaknesses

CWE-347

Affected products

• Impala (Apache)
• Apache Impala (Apache Software Foundation)

References

• https://lists.apache.org/thread/20cov78py0zqzx7dyq39ktythkwn91zs
• http://www.openwall.com/lists/oss-security/2026/09/08/22