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CVE-2026-29790

dbt-common: commonprefix() doesn't protect against path traversal PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
dbt-labs / dbt-commonaffected < 1.37.3; affected < 1.34.2

CWE

CWE-22

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.