DEBIAN-CVE-2026-85014

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    DEBIAN-CVE-2026-85014

    Published: 4 Sept 2026Last Modified: 16 Sept 2026
    Upstream:
    CVE-2026-85014

    Summary:

    Details: undici's experimental WebSocketStream client crashes the whole Node.js process when a remote peer closes the TCP connection without a WebSocket close handshake. On an unclean close the internal socket-close handler calls abort on the writable stream unconditionally and discards the returned promise, but per the WHATWG Streams standard aborting a locked writable returns a promise that rejects with a TypeError. Because the application holds a writer on that writable, which is the only way to write, the rejection is never observed and Node's default unhandled-rejection behavior terminates the process. An untrusted server can therefore crash a client with a single abrupt disconnect, with no authentication and no application mistake. This affects undici versions from 7.0.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.

    References: https://security-tracker.debian.org/tracker/CVE-2026-85014

    Affected packages

    Package

    Name: node-undici

    Purl: pkg:deb/debian/node-undici?arch=source&distro=bookworm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    5.15.0+dfsg1+~cs20.10.9.3-1
    5.15.0+dfsg1+~cs20.10.9.3-1+deb12u1
    5.15.0+dfsg1+~cs20.10.9.3-1+deb12u2
    5.15.0+dfsg1+~cs20.10.9.3-1+deb12u3
    5.15.0+dfsg1+~cs20.10.9.3-1+deb12u4

    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
    DEBIAN-CVE-2026-85014 | CVE-DB