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    CVE-2026-12774

    A security vulnerability has been detected in BerriAI litellm up to 1.82.2. Affected by this vulnerability is the function _execute_with_mcp_client of the file litellm/proxy/_experimental/mcp_server/rest_endpoints.py of the component MCP Server Connection Testing. The manipulation leads to server-side request forgery. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure.

    Published:Jun 21, 2026
    Last Modified:Jun 22, 2026
    EPS:Jun 21, 2026
    EPSS Score:0.00206
    CVSS Score:6.3

    Affected Products

    Vendor
    Berriai
    Product
    Litellm
    Vendor
    Litellm
    Product
    Litellm

    Exploits

    https://gist.github.com/YLChen-007/256c8ff0750e298f89b6b287c90c2981https://vuldb.com/submit/811285

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High