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.
History

Thu, 30 Jul 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft
Microsoft prompty
Vendors & Products Microsoft
Microsoft prompty

Fri, 17 Jul 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 16 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Prompty: Arbitrary File Read via ${file:path} Reference Expansion
Weaknesses CWE-200
CWE-22
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-07-16T14:59:01.797Z

Updated: 2026-07-17T14:06:36.423Z

Reserved: 2026-06-09T19:39:52.404Z

Link: CVE-2026-53598

cve-icon Vulnrichment

Updated: 2026-07-17T14:06:33.407Z

cve-icon NVD

No data.

cve-icon Redhat

No data.