---
title: "Discussion on \"Cyber Alert: LiteLLM CVE-2026-59822 Lets an Arbitrary Bearer Token Reach MCP Tools\" | Hashnode"
description: "Discussion on \"Cyber Alert: LiteLLM CVE-2026-59822 Lets an Arbitrary Bearer Token Reach MCP Tools\". CVE-2026-59822 lets an arbitrary Bearer token bypass LiteLLM MCP authentication and reach configured tools. Upgrade to LiteLLM 1.84.0 or later."
url: "https://hashnode.com/posts/litellm-cve-2026-59822-mcp-auth-bypass-upgrade-184/6a9c6fb950fbea0e90c09116"
---

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Discussion

# [Cyber Alert: LiteLLM CVE-2026-59822 Lets an Arbitrary Bearer Token Reach MCP Tools](https://404-founders.com/blog/litellm-cve-2026-59822-mcp-auth-bypass-upgrade-184?utm_source=hashnode&utm_medium=feed)

CVE-2026-59822 lets an arbitrary Bearer token bypass LiteLLM MCP authentication and reach configured tools. Upgrade to LiteLLM 1.84.0 or later.

Sep 5 · 4 min read · 404-founders.com  
Updated Nov 5  
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