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...
Product
Microsoft prompty vulnerabilities
3 published CVES affecting Microsoft prompty, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 3
- Critical
- 1
- High
- 2
- Medium
- 0
- Low
- 0
- Unscored
- 0
- CISA KEV
- 0
Latest Microsoft prompty CVEs
Newest publication first
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CriticalCVSS 10.0 EPSS 1.8%
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HighCVSS 7.5 EPSS 1.3%
Prompty is a markdown file format (.prompty) for LLM prompts. Prior to 2.0.0-beta.2, Prompty loaders expanded ${file:...} references in .prompty frontmatter without enforcing that resolved paths stayed within the prompt directory or allowed roots, allowing an attacker-controlled...
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CVE-2026-53597 Prompty: Arbitrary code execution via JavaScript frontmatter in TypeScript loader
PublishedHighCVSS 8.7 EPSS 0.97%Prompty is a markdown file format (.prompty) for LLM prompts. From 2.0.0-alpha.1 until 2.0.0-beta.3, the @prompty/core TypeScript loader in runtime/typescript/packages/core/src/core/loader.ts used gray-matter without overriding executable js and javascript frontmatter engines, al...
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.