Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 14.9%
CVSS Severity
CVSS v3 Score 5.3
References
Products affected by CVE-2026-29790
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cpe:2.3:a:getdbt:dbt-common:*