CVE-2026-29790

dbt-common is the shared common utilities for dbt-core and adapter implementations use. Prior to versions 1.34.2 and 1.37.3, a path traversal vulnerability exists in dbt-common's safe_extract() function used when extracting tarball archives. The function uses os.path.commonprefix() to validate that extracted files remain within the intended destination directory. However, commonprefix() compares paths character-by-character rather than by path components, allowing a malicious tarball to write files to sibling directories with matching name prefixes. This issue has been patched in versions 1.34.2 and 1.37.3.

• CWE-22

• https://github.com/dbt-labs/dbt-common/commit/e547954a48bac9394ef6eb98432e429dce9a7709Patch
• https://github.com/dbt-labs/dbt-common/security/advisories/GHSA-w75w-9qv4-j5xjMitigation, Vendor Advisory
• https://github.com/pypa/pip/pull/13777Issue Tracking

Published

Mar 6, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

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