CVE-2024-6961: Guardrailsai Guardrails

Medium severity, CVSS 5.9. EPSS: 0.4% chance of exploitation in the next 30 days.

RAIL documents are an XML-based format invented by Guardrails AI to enforce formatting checks on LLM outputs. Guardrails users that consume RAIL documents from external sources are vulnerable to XXE, which may cause leakage of internal file data via the SYSTEM entity.

Affected products

• Guardrailsai Guardrails: before 0.5.0 (fixed in 0.5.0)

Published 2024-07-21. Last modified 2026-06-17.