high7.5
CVE-2026-53598
Prompty is a markdown file format (.prompty) for LLM prompts.
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | prompty | <= 2.0.0b1 | 2.0.0b2 |
| npm | @prompty/core | <= 2.0.0-beta.1 | 2.0.0-beta.2 |
| rust | prompty | <= 2.0.0-beta.1 | 2.0.0-beta.2 |
| nuget | Prompty.Core | <= 2.0.0-beta.1 | 2.0.0-beta.2 |