## [悪用確認] CVE-2026-59822: BerriAI LiteLLM Improper Authentication Vulnerability

- 種別: advisory
- 重大度: critical
- CVE: CVE-2026-59822
- 公開日時: 2026-09-02T00:00:00.000Z
- 情報源: CISA Known Exploited Vulnerabilities (https://nvd.nist.gov/vuln/detail/CVE-2026-59822)
- パーマリンク: https://vulnpulse.app/items/cisa-kev-cve-2026-59822

BerriAI LiteLLM
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.
対応: 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. (期限 2026-09-16)