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    CVE-2025-8848

    A vulnerability in danny-avila/librechat version 0.7.9 allows for HTML injection via the Accept-Language header. When a logged-in user sends an HTTP GET request with a crafted Accept-Language header, arbitrary HTML can be injected into the <html lang=""> tag of the response. This can lead to potential security risks such as cross-site scripting (XSS) attacks.

    Published:Oct 22, 2025
    Last Modified:Oct 30, 2025
    EPS:Oct 22, 2025
    EPSS Score:0.00031
    CVSS Score:5.4

    Affected Products

    Vendor
    Librechat
    Product
    Librechat

    Exploits

    https://huntr.com/bounties/a05ebc1f-882a-4adc-b178-d3cefa4b730e

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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