Medium [CVE-2026-90466] Path traversal of 'trusted_jar_paths' in Impala 4.5.2 allows an attacker-controlled JAR to be loaded via a relative path where the prefix matches a path specified in 'trusted_jar_paths'
This medium-severity Apache Software Foundation advisory covers CVE-2026-90466; related products: Apache Impala.
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Summary
Path traversal of 'trusted_jar_paths' in Impala 4.5.2 allows an attacker-controlled JAR to be loaded via a relative path where the prefix matches a path specified in 'trusted_jar_paths'.
The startup flag 'trusted_jar_paths' references URIs for loading files from local or remote filesystems. Path traversal can't override the schema, but can result in loading a JAR that has been uploaded to a different location in that filesystem via Impala DDLs such as CREATE DATA SOURCE and CREATE TABLE.
Path traversal can only be used if a trusted path exists, so this attack requires 'trusted_jar_paths' have a non-empty value configured by the Impala admin.
Users are recommended to upgrade to version 4.5.3, which fixes this issue.
Affected product named by the advisory: Apache Impala.
- Apache Impala 4.5.2 before 4.5.3
Official advisory · high-confidence parse· fetched 18 hours ago·verify at source
Mitigation checklist
- Users are recommended to upgrade to version 4.5.3, which fixes this issue.
Official advisory · high-confidence parse· fetched 18 hours ago·verify at source
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