The agent engineering platform

fix(langchain): backport patch ReDoS vulnerability in MRKL and ReAct action regex (CVE-2024-58340) (#35603)

Backport of #35598 to the v0.3 branch. Patches the ReDoS vulnerability
in MRKL and ReAct agent action regex patterns (CVE-2024-58340).

Created with [Deep Agents
CLI](https://docs.langchain.com/oss/python/deepagents/cli/overview).

Eugene Yurtsev committed 25d ago

b0add1f9896648bc45e9f0edecd98ed103d90e0a

Parent: 3ab0d32

Committed by GitHub <[email protected]> on 3/6/2026, 9:22:23 PM