BerriAI LiteLLM Improper Authentication Vulnerability
CVE-2026-59822 Exploited
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.
Being exploited in the wild
Catalogued 2 September 2026 · US federal remediation deadline 16 September 2026
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…
Exploit code is also public: Public PoC
- Public PoCHORKimhab/CVE-2026-59822
Part of the AI stack
This affects LiteLLM, in Inference & serving.
Assessment
- CVSS
- Not yet scored
- Severity
- Unscored
- Known exploited
- Yes — listed in the CISA KEV catalog
- Exploit availability
- CISA KEV, Public PoC
- Published
- 2 September 2026
- Last updated
- 2 September 2026
- Affected
- BerriAI · LiteLLM
- Weakness
- CWE-287, CWE-306
At the source
References
Query this programmatically
Agents can read this through the MCP endpoint, or over HTTP:
curl https://cve.zerocrew.in/api/cve/CVE-2026-59822