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    CVE-2025-55181

    Sending an HTTP request/response body with greater than 2^31 bytes triggers an infinite loop in proxygen::coro::HTTPQuicCoroSession which blocks the backing event loop and unconditionally appends data to a std::vector per-loop iteration. This issue leads to unbounded memory growth and eventually causes the process to run out of memory.

    Published:Dec 2, 2025
    Last Modified:Dec 19, 2025
    EPS:Dec 2, 2025
    EPSS Score:0.00051
    CVSS Score:5.3

    Affected Products

    Vendor
    Facebook
    Product
    Proxygen

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-834 Excessive Iteration

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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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