How severe is CVE-2026-40320?

CVE-2026-40320 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-40320 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40320?

CVE-2026-40320 affects Giskard. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40320?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-40320 have an EU (EUVD) identifier?

Yes. CVE-2026-40320 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24060.

When was CVE-2026-40320 published?

CVE-2026-40320 was published on 2026-04-17 and last updated on 2026-06-17.

CVE-2026-40320

CVE-2026-40320 is a high-severity vulnerability in Giskard with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1336.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 5.4
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-24060
Weakness: CWE-1336
Affected product: Giskard
Published: 2026-04-17
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-40320?: CVE-2026-40320 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-40320 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40320?: CVE-2026-40320 affects Giskard. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40320?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-40320 have an EU (EUVD) identifier?: Yes. CVE-2026-40320 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24060.
When was CVE-2026-40320 published?: CVE-2026-40320 was published on 2026-04-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:giskard:giskard:*:*:*:*:*:*:*:*

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