CVE-2026-40320

Giskard is an open-source testing framework for AI models. In versions prior to 1.0.2b1, the ConformityCheck class rendered the rule parameter through Jinja2's default Template() constructor, silently interpreting template expressions at runtime. If check definitions are loaded from an untrusted source, a crafted rule string could achieve arbitrary code execution. Exploitation requires write access to a check definition and subsequent execution of the test suite. This issue has been fixed in giskard-checks version 1.0.2b1.

CVSS 4.0

5.4CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 3% of CVEs (scores of 2026-10-26)

CWE

CWE-1336

Published

2026-04-17

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

Affected

• giskard:giskard

Packages (OSV)

References

• https://github.com/Giskard-AI/giskard-oss/releases/tag/giskard-checks%2Fv1.0.2b1
• https://github.com/Giskard-AI/giskard-oss/security/advisories/GHSA-7xjm-g8f4-rp26

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