CVE-2026-53598
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| microsoft | prompty | < 2.0.0-beta.2 | affected |
Weaknesses
- CWE-22: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- CWE-200: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
References
- https://github.com/microsoft/prompty/security/advisories/GHSA-wxhm-2mq7-7697
- https://github.com/microsoft/prompty/commit/88ac9948d7d37995edbb2f6d36913436626c39e1
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