GHSA-xv26-6w52-cph6

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    GHSA-xv26-6w52-cph6

    Published: 15 Jul 2026Last Modified: 10 Sept 2026

    Summary: websocket-driver: Message corruption via abuse of protocol length headers

    Details: ### Impact The frame format in draft versions of the WebSocket protocol includes a length header that allows an arbitrarily large integer to be encoded as a sequence of bytes with the high bit set. By sending an indefinite sequence of bytes with values `0x80` or above, a client can make the server parse these bytes into an ever-growing integer. Since JavaScript numbers are 64-bit floating point values, this number will eventually lose precision and lead to the subsequent payload being parsed incorrectly. ### Patches The issue has been patched in version 0.7.5 by rejecting the message if the length header exceeds the configured maximum message length. All users should upgrade to this version. ### Workarounds No known workarounds exist. ### Acknowledgements This issue was discovered and reported by Pranjali Thakur, DepthFirst Security Research Team.

    References: https://github.com/faye/websocket-driver-node/security/advisories/GHSA-xv26-6w52-cph6, https://github.com/faye/websocket-driver-node, https://github.com/faye/websocket-driver-node/releases/tag/0.7.5

    Affected packages

    Package

    Name: websocket-driver

    Purl: pkg:npm/websocket-driver

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -0.7.5

    Affected versions

    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
    GHSA-xv26-6w52-cph6 | CVE-DB