Vulnerability in Giskard Giskard-Agent
CVE-2026-34172
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (56.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.008 · change: +0.002
Affected products
- Giskard Giskard-Agent — versions 1.0.2
- Giskard Giskard-Agents — versions 1.0.1
- Giskard-Ai Giskard-Oss — versions < 0.3.4, >= 1.0.1a1, < 1.0.2b1
Weakness classification (CWE)
References
- github.com/Giskard-AI/giskard-oss/security/advisories/GHSA-frv4-x25r-588m (Exploit, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-34172?
- CVE-2026-34172 is a high-severity vulnerability in Giskard Giskard-Agent, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 8.8/10. Published 2026-03-31.
- How severe is CVE-2026-34172?
- High severity. CVSS v3 base score is 8.8 out of 10.