CVE-2026-73299

CVE

Threat entity extracted from intelligence sources

Frequency

3

occurrences

First Seen

August 13, 2026

Last Seen

August 13, 2026

Exploited in Wild

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Ransomware Use

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Public Exploits

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Attack Vector

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Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Critical RCE Vulnerability in Prompty (CVE-2026-73299) Requires Immediate Action84.3

CVE-2026-73299 is a critical remote code execution vulnerability in the TypeScript Nunjucks renderer of Prompty, affecting versions prior to 0.1.5 and 2.0.0-beta.5. An unauthenticated attacker can exploit this flaw by uploading a malicious .prompty template file, allowing them to execute arbitrary J...

Public Exploits

Checking GitHub for proof-of-concept code…

Related Clusters (1)

Critical RCE Vulnerability in Prompty (CVE-2026-73299) Requires Immediate Action

Aug 13·1 sources

Related Articles (3)

CVE-2026-73299 AKAOMA CVE VULNERABILITIES / 14h 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.

cve.akaoma.com·Aug 13

CVE-2026-73299 TheHackerWire / 13h Attack Vector How the vulnerability can be exploited Network 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.

www.thehackerwire.com·Aug 13

CVE-2026-73299 - Exploits & Severity

Related Entities

Zero-day Exploit CWE-94 - Code Injection T1059 - Command and Scripting Interpreter T1059.007 - JavaScript Nunjucks Prompty TypeScript Node.js