Improper Authentication Affecting org.apache.hive:hive-service package, versions [,4.2.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published25 Aug 2026
- disclosed25 Aug 2026
- creditAndrew Rukin (Arenadata)
Introduced: 25 Aug 2026
NewCVE-2026-53561 (opens in a new tab)How to fix?
Upgrade org.apache.hive:hive-service to version 4.2.1 or higher.
Overview
org.apache.hive:hive-service is a package for reading, writing, and managing large datasets residing in distributed storage using SQL.
Affected versions of this package are vulnerable to Improper Authentication through the doSamlAuth process in service/src/java/org/apache/hive/service/cli/thrift/ThriftHttpServlet.java and HiveSamlAuthTokenGenerator in service/src/java/org/apache/hive/service/auth/saml/HiveSamlAuthTokenGenerator.java. An attacker can obtain an authenticated HiveServer2 session as an arbitrary user by sending a forged Authorization: Bearer token to the HTTP /cliservice endpoint when SAML authentication is enabled. The vulnerable code accepted attacker-supplied bearer tokens during SAML HTTP authentication without properly validating the encoded token contents, allowing a remote unauthenticated network attacker to impersonate Hive users. This breaks access control for HiveServer2 HTTP deployments that use native SAML mode, exposing authenticated session access to the attacker.