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Fencer Vulns
medium 4.2

CVE-2024-40637 json

Implicit override for built-in materializations from installed packages in dbt-core

published 2024-07-16 2 y ago modified 2026-10-30 10 d ago also GHSA-p3f3-5ccg-83xq , PYSEC-2024-66 , EUVD-2024-0033

cvss
4.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits
0
none known

Summary

dbt enables data analysts and engineers to transform their data using the same practices that software engineers use to build applications. When a user installs a package in dbt, it has the ability to override macros, materializations, and other core components of dbt. This is by design, as it allows packages to extend and customize dbt's functionality. However, this also means that a malicious package could potentially override these components with harmful code. This issue has been fixed in versions 1.8.0, 1.6.14 and 1.7.14. Users are advised to upgrade. There are no kn own workarounds for this vulnerability. Users updating to either 1.6.14 or 1.7.14 will need to set `flags.require_explicit_package_overrides_for_builtin_materializations: False` in their configuration in `dbt_project.yml`.

Patch / fix

  • pypi dbt-core 1.6.14, 1.7.14
  • getdbt dbt-core 1.6.14, 1.7.14

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • tempered.works https://tempered.works/posts/2024/07/06/preventing-data-theft-with-gcp-service-controls referenced PoC, tagged "exploit" by a source, unverified
  • elementary-data.com https://www.elementary-data.com/post/are-dbt-packages-secure-the-answer-lies-in-your-dwh-policies referenced PoC, tagged "exploit" by a source, unverified
  • equalexperts.com https://www.equalexperts.com/blog/tech-focus/are-you-at-risk-from-this-critical-dbt-vulnerability referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 4.2 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
NVD 3.1 7.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
GitHub 3.1 4.2 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
OSV 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi dbt-core
>=1.6.0, <1.6.14
>=1.7.0, <1.7.14
<1.6.14
1.6.14
1.7.14

Affected products

  • dbt-labs dbt-core

Classification

Weakness
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
  • CWE-94 Improper Control of Generation of Code
  • CWE-89 Improper Neutralization of Special Elements used in an SQL Command
  • CWE-913 Improper Control of Dynamically-Managed Code Resources

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.