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VulnerabilityPublished Updated

CVE-2026-40320: giskard-oss · Template Injection

Affects giskard-ossSource CVE Database V5

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Not known to be exploited · CVSS 5.4 Medium : upgrade to 1.0.2b1 when convenient.

Data as of 29 Oct 2026, 18:38 UTC

CVSS 4.0 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.0.2b1
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 17 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade giskard-oss to 1.0.2b1.

Affected software

ProductAffectedFixed in
Giskard-AIgiskard-ossAffected
  • <1.0.2b1
Fixed in
  • 1.0.2b1
PyPIgiskard-checkspkg:pypi/giskard-checksOther threatsAffected
  • =1.0.2
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in giskard-checks version 1.0.2b1. Users should upgrade to this version or later to remediate the vulnerability. Since the vulnerability requires write access to check definitions and execution of the test suite, restricting these permissions can also reduce risk. Patch status is not explicitly stated in the vendor advisory content, but the description confirms the issue is fixed in version 1.0.2b1.

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.

References

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