CVE-2026-53561: Apache Hive HiveServer2 SAML Bearer Impersonation

Dev.to•Mon, Aug 31, 2026, 04:49 AM•2 min read

Originally published at HOL CVE-2026-53561: Apache Hive HiveServer2 SAML Bearer Impersonation TL;DR: HiveServer2's SAML HTTP path accepted a forged Authorization: Bearer token as a real session. An unauthenticated attacker who can reach /cliservice can impersonate any Hive user. This is not the...

Source: [Dev.to](https://dev.to/hol/cve-2026-53561-apache-hive-hiveserver2-saml-bearer-impersonation-3npb)

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