diff --git a/README.md b/README.md
index e1330b55c..4defe25b5 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,8 @@
 [![YouTube Channel](https://img.shields.io/youtube/channel/subscribers/UCn2bInQrjdDYKEEmbpwblLQ?label=Subscribe)](https://www.youtube.com/@Langflow)
 [![Discord Server](https://img.shields.io/discord/1116803230643527710?logo=discord&style=social&label=Join)](https://discord.gg/EqksyE2EX9)
 
+> [!CAUTION]
+> Users must update to Langflow >= 1.3 to protect against [CVE-2025-3248](https://nvd.nist.gov/vuln/detail/CVE-2025-3248).
 
 [Langflow](https://langflow.org) is a powerful tool for building and deploying AI-powered agents and workflows. It provides developers with both a visual authoring experience and a built-in API server that turns every agent into an API endpoint that can be integrated into applications built on any framework or stack. Langflow comes with batteries included and supports all major LLMs, vector databases and a growing library of AI tools.