Apache Hive: Unauthenticated authentication bypass in HiveServer2 HTTP SAML bearer-token validation allows impersonation of any Hive user

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-53561
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-25 11:16:53 UTC
Updated2026-08-25 11:16:53 UTC
DescriptionAn improper authentication vulnerability in HiveServer2 SAML bearer-token validation in Apache Hive 4.0.0 through 4.2.0 (and later unreleased branches) on deployments using HTTP transport with hive.server2.authentication=SAML allows an unauthenticated network attacker to authenticate as an arbitrary Hive user and obtain an authenticated HiveServer2 session via a forged Authorization: Bearer token sent to the /cliservice HTTP endpoint. Users are recommended to upgrade to 4.2.1 version that includes the fix for this issue. Access / authorization required: No Hive credentials, SAML IdP login, or knowledge of the server signing secret is required. The attacker only needs network reachability to the HiveServer2 HTTP port (typically /cliservice), directly or through a reverse proxy such as Apache Knox that forwards unauthenticated requests to HS2. The instance must have SAML authentication enabled in HTTP mode. Deployments where Knox handles SSO and HiveServer2 uses LDAP/Kerberos (not native SAML mode) are not affected by this specific issue.

Risk And Classification

Problem Types: CWE-287 | CWE-305 | CWE-345 | CWE-287 CWE-287 Improper Authentication | CWE-345 CWE-345 Insufficient Verification of Data Authenticity | CWE-305 CWE-305 Authentication Bypass by Primary Weakness

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache Hive affected 4.0.0 4.2.0 semver Not specified

References

ReferenceSourceLinkTags
github.com/apache/hive [email protected] github.com
lists.apache.org/thread/6d56mk501fp4f8cb5wvrpj2jwd9knt05 [email protected] lists.apache.org
github.com/apache/hive/commit/6ca06ca1104ff7462363087a867d70d546134774 [email protected] github.com
issues.apache.org/jira/browse/HIVE-29653 [email protected] issues.apache.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Andrew Rukin (Arenadata) (en)

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