CVE-2026-40320
Giskard has an Unsandboxed Jinja2 Template Rendering in ConformityCheck
Description
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.
INFO
Published Date :
April 17, 2026, 6:16 p.m.
Last Modified :
April 24, 2026, 8:15 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update Giskard to version 1.0.2b1.
- Load check definitions only from trusted sources.
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-2026-40320.
| URL | Resource |
|---|---|
| https://github.com/Giskard-AI/giskard-oss/releases/tag/giskard-checks%2Fv1.0.2b1 | Release Notes |
| https://github.com/Giskard-AI/giskard-oss/security/advisories/GHSA-7xjm-g8f4-rp26 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-40320 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-2026-40320
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-2026-40320 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-40320 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]
Apr. 24, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:giskard:giskard:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.2 Added Reference Type GitHub, Inc.: https://github.com/Giskard-AI/giskard-oss/releases/tag/giskard-checks%2Fv1.0.2b1 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/Giskard-AI/giskard-oss/security/advisories/GHSA-7xjm-g8f4-rp26 Types: Vendor Advisory -
New CVE Received by [email protected]
Apr. 17, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V4.0 AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/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-1336 Added Reference https://github.com/Giskard-AI/giskard-oss/releases/tag/giskard-checks%2Fv1.0.2b1 Added Reference https://github.com/Giskard-AI/giskard-oss/security/advisories/GHSA-7xjm-g8f4-rp26