CVE-2026-29790
MEDIUM
GHSA-w75w-9qv4-j5xj
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Lifecycle Timeline
3Tags
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.
Analysis
Path traversal in dbt-common's tarball extraction function allows attackers to write files outside the intended destination directory by exploiting improper path validation in the safe_extract() method. An attacker can craft a malicious tarball to place files in sibling directories, potentially compromising systems using affected versions of dbt-common in dbt-core and adapter implementations. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review file handling controls.
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External POC / Exploit Code
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