PYSEC-2026-3538 Prompty: Arbitrary file read via file reference expansion

Summary Prompty loaders expanded $file:... references in .prompty frontmatter without enforcing that the resolved path stayed within an authorized directory. An attacker-controlled prompt file could use path traversal or an absolute path to cause the host application to read files accessible to t...

Directory Traversal

Overview prompty is a Prompty is a new asset class and format for LLM prompts that aims to provide observability, understandability, and portability for developers. It includes spec, tooling, and a runtime. This Prompty runtime supports Python Affected versions of this package are vulnerable to...

GHSA-WXHM-2MQ7-7697 Prompty: Arbitrary file read via file reference expansion

Summary Prompty loaders expanded $file:... references in .prompty frontmatter without enforcing that the resolved path stayed within an authorized directory. An attacker-controlled prompt file could use path traversal or an absolute path to cause the host application to read files accessible to t...