CVE-2026-73299

Published: Ago 12, 2026 Last Modified: Ago 12, 2026
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 10,0
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: changed
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0122
Percentile
0,7th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

94

Improper Control of Generation of Code ('Code Injection')

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control Integrity Confidentiality Availability Non-Repudiation
Potential Impacts:
Bypass Protection Mechanism Gain Privileges Or Assume Identity Execute Unauthorized Code Or Commands Hide Activities
Applicable Platforms
Languages: Interpreted
Technologies: AI/ML
Likelihood of Exploit: Medium
View CWE Details
1336

Improper Neutralization of Special Elements Used in a Template Engine

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity
Potential Impacts:
Execute Unauthorized Code Or Commands
Applicable Platforms
Languages: Java, PHP, Python, JavaScript, Interpreted
Technologies: Not Technology-Specific, AI/ML, Client Server
View CWE Details
https://github.com/microsoft/prompty/commit/e4a0ebf49e3a78d…
https://github.com/microsoft/prompty/commit/e4a0ebf49e3a78d5d7796c8480bf9a4f0c5…
https://github.com/microsoft/prompty/commit/f5c57c94a0990cc…
https://github.com/microsoft/prompty/commit/f5c57c94a0990cca79d095c3daab661b4b1…
https://github.com/microsoft/prompty/pull/404
https://github.com/microsoft/prompty/pull/404
https://github.com/microsoft/prompty/pull/405
https://github.com/microsoft/prompty/pull/405
https://github.com/microsoft/prompty/security/advisories/GH…
https://github.com/microsoft/prompty/security/advisories/GHSA-w28w-gp39-m4p6
https://github.com/microsoft/prompty/tree/typescript/2.0.0-…
https://github.com/microsoft/prompty/tree/typescript/2.0.0-beta.5