CVE ID
CVE-2026-59822
Vulnerability Name
BerriAI LiteLLM Improper Authentication Vulnerability
- Project: BerriAI
- Product: LiteLLM
Date
- Date Added: 2026-09-02
- Due Date: 2026-09-16
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.
Known To Be Used in Ransomware Campaigns?
Unknown
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.
Additional Notes
https://github.com/BerriAI/litellm/security/advisories/GHSA-7488-6r32-c95q ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-59822
Related Security News
- Nearly 1 in 10 Exposed LiteLLM Gateways Accepted the Example "sk-1234" Admin Key
- CISA Adds Seven Exploited Flaws as Attackers Deploy Reverse Shells and Crypto Miners
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