Exploit for CVE-2026-109519

CVE-2026-109519 Path Traversal → Arbitrary File Write → S...

Arbitrary Code Injection

Overview @prompty/core is a Prompty core package Affected versions of this package are vulnerable to Arbitrary Code Injection via the NunjucksRenderer in nunjucks.ts, which passes user-controlled inputs directly to env.renderString without restricting member access or function calls within the...

CVE-2026-73299

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 propertie...

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

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 propertie...

CVE-2026-73299

Summary: CVE-2026-73299 affects Prompty’s TypeScript Nunjucks renderer used for .prompty templates. Prior to versions 0.1.5 and 2.0.0-beta.5, untrusted .prompty template bodies were evaluated with unrestricted JavaScript member access, allowing an attacker-controlled template to traverse construc...

EUVD-2026-57382

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 propertie...

CVE-2026-73299

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 propertie...

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

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 propertie...

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

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 propertie...

CVE-2026-73299: Improper Control of Generation of Code

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 propertie...

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

Summary 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. Affected packages - npm...

GHSA-W28W-GP39-M4P6 Prompty: Server-Side Template Injection to Remote Code Execution in the @prompty/core Nunjucks Renderer

Summary 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. Affected packages - npm...

PT-2026-67479

Summary 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. Affected packages - npm...

PT-2026-71197

Name of the Vulnerable Software and Affected Versions Prompty versions prior to 0.1.5 Prompty versions prior to 2.0.0-beta.5 Description The TypeScript Nunjucks renderer evaluates untrusted .prompty template bodies with unrestricted JavaScript member access. This allows an attacker to control a...

11ty-nunjucks-md (1.0.0), 20ful (>=0.3.2, <=0.3.5) +2750 more potentially affected by CVE-2026-2327 via markdown-it (>=13.0.0, <=14.1.0)

markdown-it NPM version =13.0.0, =0.3.2, =0.0.2, =2.0.0-beta.1, =0.3.1, =0.42.46, =2.0.4, =0.0.1, =0.33.4, =0.3.0, =10.22.0, =3.7.0-beta.1, =3.9.0-beta.1, =3.9.3 and more Source cves: CVE-2026-2327 Source advisory: GHSA-38C4-R59V-3VQW...

11ty-nunjucks-md (1.0.0), 20ful (>=0.3.2, <=0.3.5) +2750 more potentially affected by CVE-2026-2327 via markdown-it (>=13.0.0, <=14.1.0)

markdown-it NPM version =13.0.0, =0.3.2, =0.0.2, =2.0.0-beta.1, =0.3.1, =0.42.46, =2.0.4, =0.0.1, =0.33.4, =0.3.0, =10.22.0, =3.7.0-beta.1, =3.9.0-beta.1, =3.9.3 and more Source cves: CVE-2026-2327 Source advisory: MEND:CVE-2026-2327...

Embedded Malicious Code

Overview Affected versions of this package are vulnerable to Embedded Malicious Code. This package contains malicious code associated with the Sha1-hulud supply chain attack, and its content was removed from the official package manager. The malware functions as a self-replicating worm capable of...

EUVD-2025-198696

Malicious code in @asyncapi/nunjucks-filters npm...

MAL-2025-190662 Malicious code in @asyncapi/nunjucks-filters (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 51137a75fbced2a0515e71df0b97baf386e784c2eb5134c77ed77afdcb48fe34 The package @asyncapi/nunjucks-filters was found to contain malicious code. Source: ghsa-malware...

Malware in @asyncapi/nunjucks-filters

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outsid...