Firetruck

CVE-2026-59822

KEV

BerriAI LiteLLM Improper Authentication Vulnerability

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Vendor / Project
BerriAI
Product
LiteLLM
Date added
Sep 2, 2026
Due date
Sep 16, 2026
Known ransomware use
Unknown
CWEs
CWE-287, CWE-306

Description

BerriAI LiteLLM contains an improper authentication vulnerability in the MCP Streamable HTTP endpoint that could allow an unauthenticated attacker to establish an authenticated MCP session using an arbitrary Bearer token.

Required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Notes