CVE-2026-56207
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Apache Impala
PublishedSep 9, 2026
First seenSep 9, 2026
Weakness typeCWE-347CWE-347
How to fix
Update
- apache impala4.5.2 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache impala | 4.0.0 ≤ v < 4.5.2 | 4.5.2 |
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