CVE-2026-53597
NONE—CVSS v3
—CVSS v2
0.93%
EPSS (exploit probability)
CWE-94CWE
Description
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, allowing an attacker-controlled .prompty file with ---js frontmatter to execute arbitrary JavaScript during prompt loading. This issue is fixed in version 2.0.0-beta.3.
Affected routers (0)
No routers currently mapped to this CVE in our database.