CVE-2026-29790
dbt-common: commonprefix() doesn't protect against path traversal
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.
INFO
Published Date :
March 6, 2026, 9:16 p.m.
Last Modified :
March 13, 2026, 6:31 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update dbt-common to version 1.34.2 or later.
- Update dbt-common to version 1.37.3 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-29790.
| URL | Resource |
|---|---|
| https://github.com/dbt-labs/dbt-common/commit/e547954a48bac9394ef6eb98432e429dce9a7709 | Patch |
| https://github.com/dbt-labs/dbt-common/security/advisories/GHSA-w75w-9qv4-j5xj | Mitigation Vendor Advisory |
| https://github.com/pypa/pip/pull/13777 | Issue Tracking |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-29790 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-29790
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-29790 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-29790 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Added CPE Configuration OR *cpe:2.3:a:getdbt:dbt-common:*:*:*:*:*:*:*:* versions up to (excluding) 1.34.2 *cpe:2.3:a:getdbt:dbt-common:*:*:*:*:*:*:*:* versions from (including) 1.35.0 up to (excluding) 1.37.3 Added Reference Type GitHub, Inc.: https://github.com/dbt-labs/dbt-common/commit/e547954a48bac9394ef6eb98432e429dce9a7709 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/dbt-labs/dbt-common/security/advisories/GHSA-w75w-9qv4-j5xj Types: Mitigation, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/pypa/pip/pull/13777 Types: Issue Tracking -
New CVE Received by [email protected]
Mar. 06, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-22 Added Reference https://github.com/dbt-labs/dbt-common/commit/e547954a48bac9394ef6eb98432e429dce9a7709 Added Reference https://github.com/dbt-labs/dbt-common/security/advisories/GHSA-w75w-9qv4-j5xj Added Reference https://github.com/pypa/pip/pull/13777