# CVE-2026-40319

> Vulnerability · severity: **MEDIUM** (CVSS 5.5).

## Description

Giskard is an open-source testing framework for AI models. In versions prior to 1.0.2b1, the RegexMatching check passes a user-supplied regular expression pattern directly to Python's re.search() without any timeout or complexity guard. A crafted regex pattern can trigger catastrophic backtracking, causing the process to hang indefinitely. 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.

## Key facts

- **CVE ID:** CVE-2026-40319
- **Published:** 2026-04-17
- **CVSS severity:** MEDIUM
- **CVSS base score:** 5.5
- **CWE codes:** CWE-1333

## Affected products

- `giskard:giskard`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40319

## Citation

> AI Analytics. CVE-2026-40319. Retrieved 2026-07-15 from https://api.ai-analytics.org/cve/CVE-2026-40319. Derived from NIST NVD. Licensed CC0.

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