CVE-2026-56207

9.8 CRITICAL 0.5% exploit odds Fix listed Crypto Server

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2026-09-09 11:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-10 20:38 UTC Last updatedMost recent change to the record

Details

Published: 2026-09-09 11:17 UTC
Last modified: 2026-09-10 20:38 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Weakness: CWE-347
Record status: Analyzed

Affected

Apache Impala < 4.5.2

Attack profile CVSS 3.1 · 9.8

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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Fix and advisories

https://lists.apache.org/thread/20cov78py0zqzx7dyq39ktythkwn91zs

References

NVD record · CVE.org record