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Advisory record · GHSA-frv4-x25r-588m

Giskard Agents have Server-side template injection via ChatWorkflow.chat() using non-sandboxed Jinja2 Environment

CVSS 7.7 HighEPSS 0.0063 · 51st percentile

Published by the GitHub Advisory Database at 27 Mar 2026, 22:17 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
giskard-agentsPyPI<0.3.4 || >=1.0.1a1, <1.0.2b10.3.4, 1.0.2b1
Identifiers
GHSA-frv4-x25r-588m · CVE-2026-34172 · PYSEC-2026-2487
Weakness (CWE)
CWE-1336
Tags
Published
27 Mar 2026
Updated
13 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Giskard Agents (giskard-agents on PyPI) versions below 0.3.4 and versions from 1.0.1a1 before 1.0.2b1 are vulnerable. The method ChatWorkflow.chat() treats its string argument as a Jinja2 template in a non-sandboxed environment, so a developer who passes user input to it lets an attacker run code on the server. Upgrade to giskard-agents 0.3.4, or 1.0.2b1 for the pre-release branch.

Written 6 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.7 High 4.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0063, the 51st percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:02 UTC First seen by agentprime
  2. 31 Oct 2026, 15:02 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.