CVE-2026-59822
Improper Authentication in BerriAI LiteLLM. CISA confirmed attackers exploit it and added it to its Known Exploited Vulnerabilities catalog on 2 September 2026.
- Product
- BerriAI LiteLLM
- Added to CISA's catalog
- Federal fix-by date
- Ransomware
- No known use in ransomware campaigns
- Vendor advisories
- Sources
- CISA’s catalog, NVD entry
CISA’s 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.
More from BerriAI this year.
- CVE-2026-42271 Command Injection, added
- CVE-2026-42208 SQL Injection, added
Every flaw CISA confirmed exploited in the last 30 days is on the exploit watch. This is not security advice. Check the vendor’s advisory before acting. From CISA’s catalog of 4 November 2026.