cvedb.io
CVE-2026-73299
CRITICAL · CVSS 10
EPSS exploitation probability: 0%
Published 2026-08-12T18:18:15.197 · Last modified 2026-08-12T18:18:15.197

Summary

Prompty is a markdown file format (.prompty) for LLM prompts. Prior to 0.1.5 and 2.0.0-beta.5, the TypeScript Nunjucks renderer evaluated untrusted .prompty template bodies with unrestricted JavaScript member access. An attacker-controlled template could traverse constructor and prototype properties to execute JavaScript in the host Node.js process. This issue is fixed in versions 0.1.5 and 2.0.0-beta.5.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.