CVE-2026-34172
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk46th percentile - higher than 46% of all known CVEs
Summary
Giskard before versions 0.3.4 and 1.0.2b1 in the ChatWorkflow.chat(message) method passes its string argument directly as a Jinja2 template source to a non-sandboxed environment, enabling remote code execution via Jinja2 class traversal.
Risk Assessment
If a developer passes user input to this method, an attacker can achieve full remote code execution on the server, leading to complete application compromise.
Recommendation
Upgrade Giskard to version 0.3.4 or 1.0.2b1, where the issue is fixed.
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Original NVD description (English source)
Giskard is an open-source Python library for testing and evaluating agentic systems. Prior to versions 0.3.4 and 1.0.2b1, ChatWorkflow.chat(message) passes its string argument directly as a Jinja2 template source to a non-sandboxed Environment. A developer who passes user input to this method enables full remote code execution via Jinja2 class traversal. The method name chat and parameter name message naturally invite passing user input directly, but the string is silently parsed as a Jinja2 template, not treated as plain text. This issue has been patched in versions 0.3.4 and 1.0.2b1.

