CVE-2026-53598
Prompty: Arbitrary File Read via ${file:path} Reference Expansion
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-22 CWE-200 |
| Vendor | microsoft |
| Product | prompty |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Jul 16, 2026 |
Stay Ahead of the Next One
Get instant alerts for microsoft prompty
Be the first to know when new high vulnerabilities affecting microsoft prompty are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
microsoft / prompty
< 2.0.0-beta.2