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TI-2026-40572 Aliases CVE-2026-56207GHSA-3mmv-f538-2fpw

Apache Impala: SAML authentication bypass via forged bearer token

Priority MEDIUM 49CWE-347Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-347.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00465 40th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Impala4.0.0 – 4.5.1—No fix listedCNA
  • Apache Impala VendorApache Affected 4.0.0 – 4.5.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:impala:*:*:*:*:*:*:*:*4.0.0 to before 4.5.2VulnerableApache
  • cpe:2.3:a:apache:impala:*:*:*:*:*:*:*:* Versions 4.0.0 to before 4.5.2 Vulnerable ·Apache

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-56207
  2. 2026-10-03 Alias added: GHSA-3mmv-f538-2fpw

References

Advisory 2

  • TI-2018-08448 Incorrect permission assignment in Apache Impala CVSS 3.0CRITICAL 9.8
  • TI-2017-03640 Improper authentication in Apache Impala CVSS 3.0CRITICAL 9.8
  • TI-2026-41667 Apache Impala: Secrets Exfiltration via SSRF CVSS 3.1HIGH 8.8
  • TI-2021-09365 Impala logs contain secrets CVSS 3.1HIGH 7.5
  • TI-2026-46513 Apache Impala: RCE via External Data Source Class Loading CVSS 3.1HIGH 8.1
  • TI-2019-07409 Session fixation in Apache Impala CVSS 3.1HIGH 7.5
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences