CVE-2026-73299 - Prompty: Server-Side Template Injection to Remote Code Execution in the @prompty/core Nunjucks Renderer

CVE-2026-73299 - Prompty: Server-Side Template Injection to Remote Code Execution in the @prompty/core Nunjucks Renderer

https://cvefeed.io/rssfeed/latest.atom / Wed, 08/12/2026 - 22:26
CVE ID :CVE-2026-73299
Published : Aug. 12, 2026, 6:18 p.m. | 1 hour, 10 minutes ago
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.
Severity: 10.0 | CRITICAL
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Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.