CVE-2026-53598

Prompty is a markdown file format (.prompty) for LLM prompts. Prior to 2.0.0-beta.2, Prompty loaders expanded ${file:...} references in .prompty frontmatter without enforcing that resolved paths stayed within the prompt directory or allowed roots, allowing an attacker-controlled prompt file to read local files through absolute paths, .. traversal, or symlink escapes. This issue is fixed in versions 2.0.0-beta.2.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/microsoft/prompty/commit/88ac9948d7d37995edbb2f6d36913436626c39e1
https://github.com/microsoft/prompty/security/advisories/GHSA-wxhm-2mq7-7697

Configurations

No configuration.

History

24 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Prompty es un formato de archivo markdown (.prompty) para prompts de LLM. Antes de la versión 2.0.0-beta.2, los cargadores de Prompty expandían las referencias ${file:...} en el ’frontmatter’ de .prompty sin asegurar que las rutas resueltas permanecieran dentro del directorio del prompt o de las raíces permitidas, permitiendo que un archivo de prompt controlado por un atacante leyera archivos locales a través de rutas absolutas, el recorrido de directorios con ’..’ o escapes de enlaces simbólicos. Este problema está solucionado en las versiones 2.0.0-beta.2.

Information

Published : 2026-07-16 16:19

Updated : 2026-10-24 20:10

NVD link : CVE-2026-53598

Mitre link : CVE-2026-53598

CVE.ORG link : CVE-2026-53598

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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