CVE-2026-56207CWE-347

CVE-2026-56207

Critical · published September 9, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
39.3
In the wild
Unconfirmed
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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00465 · 39.3th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2026-09-09T15:17Z
Affected products (1)
ProductVersionsFixed in
apache/impala≥ 4.0.0, < 4.5.24.5.2
References (2)
https://lists.apache.org/thread/20cov78py0zqzx7dyq39ktythkwn91zs · [email protected]http://www.openwall.com/lists/oss-security/2026/09/08/22 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 11 SEP 03:18Z
    EPSS moved — → 0%
    epss
  • 09 SEP 10:36Z
    Apache Impala: SAML authentication bypass via forged bearer token
    cvelistv5