{"id":"CVE-2026-73299","revision":"10322fe26b9e4fcda1e7cde6375d91e9","records":[{"revision":"10322fe26b9e4fcda1e7cde6375d91e9","observedAt":"2026-10-25T15:19:03.401+00:00","statement":{"source":"nvd","id":"CVE-2026-73299","aliases":[],"title":"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 …","description":"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.","state":0,"publishedAt":"2026-08-12T18:18:15.197+00:00","modifiedAt":"2026-10-24T15:10:00.19+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10,"severity":"CRITICAL"}],"references":["https://github.com/microsoft/prompty/commit/e4a0ebf49e3a78d5d7796c8480bf9a4f0c54d19e","https://github.com/microsoft/prompty/commit/f5c57c94a0990cca79d095c3daab661b4b1fb89f","https://github.com/microsoft/prompty/pull/404","https://github.com/microsoft/prompty/pull/405","https://github.com/microsoft/prompty/security/advisories/GHSA-w28w-gp39-m4p6","https://github.com/microsoft/prompty/tree/typescript/2.0.0-beta.5"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73299","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-94","CWE-1336"],"productCriteria":[],"sourceDates":{"published":"2026-08-12T18:18:15.197","lastModified":"2026-10-24T15:10:00.190"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-73299","identifiers":["CVE-2026-73299"]},"retained":false,"historicalAffected":[]}],"coverage":[]}