CVE-2026-56207

EUVD-2026-74797
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
apacheCNA
UNKNOWN
---
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
apacheimpala
4.0.0 ≤
𝑥
≤ 4.5.1
CNA
Common Weakness Enumeration
References
https://lists.apache.org/thread/20cov78py0zqzx7dyq39ktythkwn91zs
http://www.openwall.com/lists/oss-security/2026/09/08/22