CVE-2021-34538: Apache Hive Security vulnerability in Hive with UDFs

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-07-16 · updated 2026-06-17
Weakness: CWE-306

Description

Apache Hive before 3.1.3 "CREATE" and "DROP" function operations does not check for necessary authorization of involved entities in the query. It was found that an unauthorized user can manipulate an existing UDF without having the privileges to do so. This allowed unauthorized or underprivileged users to drop and recreate UDFs pointing them to new jars that could be potentially malicious.

Affected products

Apache Software Foundation Apache Hive: before 3.1.3 — fixed in 3.1.3

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Hive 3.1.3. Check the vendor advisory for mitigations.

References

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