Description
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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| dbt-labs | dbt-common | < 1.37.3, < 1.34.2 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | dbt-common | < 1.34.2 | 1.34.2 | GHSA-w75w-9qv4-j5xj |
| PyPI | dbt-common | >= 1.35.0, < 1.37.3 | 1.37.3 | GHSA-w75w-9qv4-j5xj |
| PyPI | dbt-common | < 1.34.2 · >= 1.35.0, < 1.37.3 | 1.34.2, 1.37.3 | PYSEC-2026-2440 |