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    CVE-2025-66450

    LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when a user posts a question, the iconURL parameter of the POST request can be modified by an attacker. The malicious code is then stored in the chat which can then be shared to other users. When sharing chats with a potentially malicious “tracker”, resources loaded can lead to loss of privacy for users who view the chat link that is sent to them. This issue is fixed in version 0.8.1.

    Published:Dec 11, 2025
    Last Modified:Dec 15, 2025
    EPS:Dec 11, 2025
    EPSS Score:0.00047
    CVSS Score:5.4

    Affected Products

    Vendor
    Librechat
    Product
    Librechat

    Exploits

    https://github.com/danny-avila/LibreChat/security/advisories/GHSA-84vx-vmcf-xgpp

    Related CVEs

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    CVE-2026-31951 (CVSS 6.8) — LibreChat is a ChatGPT clone with additional features. In versions 0.8.2-rc1 through 0.8.3-rc1, user-created M…
    CVE-2026-31950 (CVSS 5.3) — LibreChat is a ChatGPT clone with additional features. In versions 0.8.2-rc2 through 0.8.2-rc3, the SSE stream…
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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