p PatchFirst

CVE-2026-105481

CVE-2026-105481

This page contains facts from public vulnerability sources. Check the original advisory before updating.

A flaw in Node.js HTTP Agent connection reuse can cause a client to accept as valid a response that was sent before the client has sent the request. This is an incomplete fix of CVE-2026-48931. The guard that destroys idle keep-alive sockets when unexpected data arrives only runs when the event loop polls for I/O. If an unsolicited response has already reached the socket but has not been read yet when the socket is handed to a new request, for example because the event loop was busy with synchronous work, the guard is removed without seeing it and the data is parsed as the response to the new request. This vulnerability affects Node.js **26.x**, **24.x**, and **22.x**.

CVSS 6.5 · Medium · Public exploit

Published
Updated

Stack: system · node

Affected products and versions

  • node.js

    Versions
    • ≥ 22.23.3, ≤ 22.23.3: Affected (semver)
    • ≥ 24.22.0, ≤ 24.22.0: Affected (semver)
    • ≥ 26.12.0, ≤ 26.12.0: Affected (semver)

    No fix published

  • nodejs Debian:12

    Versions
    • 18.13.0+dfsg1-1
    • 18.13.0+dfsg1-1.1
    • 18.19.0+dfsg-1
    • 18.19.0+dfsg-2
    • 18.19.0+dfsg-3
    • 18.19.0+dfsg-4
    • 18.19.0+dfsg-5
    • 18.19.0+dfsg-6
    • 18.19.0+dfsg-6~deb12u1
    • 18.19.0+dfsg-6~deb12u2
    • 18.19.1+dfsg-1
    • 18.19.1+dfsg-2
    • 18.19.1+dfsg-3
    • 18.19.1+dfsg-3.1
    • 18.19.1+dfsg-4
    • 18.19.1+dfsg-6
    • 18.20.1+dfsg-1
    • 18.20.1+dfsg-2
    • 18.20.1+dfsg-3
    • 18.20.1+dfsg-4
    • 18.20.4+dfsg-1~deb12u1
    • 18.20.4+dfsg-1~deb12u2
    • 18.20.4+dfsg-1~deb12u3
    • 20.10.0+dfsg-1
    • 20.12.2+dfsg-1
    • 20.13.0+dfsg-1
    • 20.13.1+dfsg-1
    • 20.13.1+dfsg-2
    • 20.14.0+dfsg-1
    • 20.14.0+dfsg-2
    • 20.14.0+dfsg-3
    • 20.15.0+dfsg-1
    • 20.15.1+dfsg-1
    • 20.16.0+dfsg-1
    • 20.17.0+dfsg-1
    • 20.17.0+dfsg-2
    • 20.18.0+dfsg-1
    • 20.18.0+dfsg-2
    • 20.18.1+dfsg-1
    • 20.18.1+dfsg-2
    • 20.18.2+dfsg-1
    • 20.18.2+dfsg-2
    • 20.18.2+dfsg-3
    • 20.18.2+dfsg-4
    • 20.18.3+dfsg-1
    • 20.19.0+dfsg-1
    • 20.19.0+dfsg-2
    • 20.19.0+dfsg1-1
    • 20.19.2+dfsg-1
    • 20.19.4+dfsg-1
    • 20.19.5+dfsg+~cs20.19.12-1
    • 20.19.5+dfsg+~cs20.19.12-2
    • 20.19.5+dfsg+~cs20.19.12-3
    • 20.19.5+dfsg+~cs20.19.12-4
    • 20.19.5+dfsg+~cs20.19.24-1
    • 22.12.0+dfsg-1
    • 22.12.0+dfsg-2
    • 22.12.0+dfsg-3
    • 22.14.0+dfsg-1
    • 22.18.0+dfsg+~cs22.17.2-1
    • 22.18.0+dfsg+~cs22.17.2-2
    • 22.18.0+dfsg-1
    • 22.19.0+dfsg+~cs22.18.0-1
    • 22.21.1+dfsg+~cs22.19.0-1
    • 22.21.1+dfsg+~cs22.19.0-2
    • 22.21.1+dfsg+~cs22.19.0-3
    • 22.21.1+dfsg+~cs22.19.0-4
    • 22.21.1+dfsg+~cs22.19.0-5
    • 22.21.1+dfsg+~cs22.19.0-6
    • 22.22.0+dfsg+~cs22.19.13-1
    • 22.22.0+dfsg+~cs22.19.13-2
    • 22.22.0+dfsg+~cs22.19.6-1
    • 22.22.1+dfsg+~cs22.19.15-1
    • 22.22.2+dfsg+~cs22.19.15-1
    • 22.22.2+dfsg+~cs22.19.15-3
    • 24.11.1+dfsg+~cs24.10.1-1
    • 24.11.1+dfsg+~cs24.10.1-2
    • 24.12.0+dfsg+~cs24.10.4-1
    • 24.13.0+dfsg+~cs24.10.7-1
    • 24.13.0+dfsg+~cs24.10.7-2
    • 24.14.0+dfsg+~cs24.12.0-1
    • 24.14.0+dfsg+~cs24.12.0-2
    • 24.14.1+dfsg+~cs24.12.0-1
    • 24.15.0+dfsg+~cs24.12.2-1
    • 24.16.0+dfsg+~cs24.13.1-1
    • 24.16.0+dfsg+~cs24.13.1-2
    • 24.17.0+dfsg+~cs24.13.2-1
    • 24.18.0+dfsg+~cs24.13.2-1
    • 24.19.0+dfsg+~cs24.13.3-1
    • 24.20.0+dfsg+~cs24.13.3-1
    • 24.20.0+dfsg+~cs24.13.3-2
    • 24.21.0+dfsg+~cs24.13.4-1
    • 24.22.0+dfsg+~cs24.19.2-1
    • 24.22.0+dfsg+~cs24.19.2-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nodejs Debian:13

    Versions
    • 20.19.2+dfsg-1
    • 20.19.2+dfsg-1+deb13u1
    • 20.19.2+dfsg-1+deb13u2
    • 20.19.2+dfsg-1+deb13u3
    • 20.19.4+dfsg-1
    • 20.19.5+dfsg+~cs20.19.12-1
    • 20.19.5+dfsg+~cs20.19.12-2
    • 20.19.5+dfsg+~cs20.19.12-3
    • 20.19.5+dfsg+~cs20.19.12-4
    • 20.19.5+dfsg+~cs20.19.24-1
    • 22.12.0+dfsg-1
    • 22.12.0+dfsg-2
    • 22.12.0+dfsg-3
    • 22.14.0+dfsg-1
    • 22.18.0+dfsg+~cs22.17.2-1
    • 22.18.0+dfsg+~cs22.17.2-2
    • 22.18.0+dfsg-1
    • 22.19.0+dfsg+~cs22.18.0-1
    • 22.21.1+dfsg+~cs22.19.0-1
    • 22.21.1+dfsg+~cs22.19.0-2
    • 22.21.1+dfsg+~cs22.19.0-3
    • 22.21.1+dfsg+~cs22.19.0-4
    • 22.21.1+dfsg+~cs22.19.0-5
    • 22.21.1+dfsg+~cs22.19.0-6
    • 22.22.0+dfsg+~cs22.19.13-1
    • 22.22.0+dfsg+~cs22.19.13-2
    • 22.22.0+dfsg+~cs22.19.6-1
    • 22.22.1+dfsg+~cs22.19.15-1
    • 22.22.2+dfsg+~cs22.19.15-1
    • 22.22.2+dfsg+~cs22.19.15-3
    • 24.11.1+dfsg+~cs24.10.1-1
    • 24.11.1+dfsg+~cs24.10.1-2
    • 24.12.0+dfsg+~cs24.10.4-1
    • 24.13.0+dfsg+~cs24.10.7-1
    • 24.13.0+dfsg+~cs24.10.7-2
    • 24.14.0+dfsg+~cs24.12.0-1
    • 24.14.0+dfsg+~cs24.12.0-2
    • 24.14.1+dfsg+~cs24.12.0-1
    • 24.15.0+dfsg+~cs24.12.2-1
    • 24.16.0+dfsg+~cs24.13.1-1
    • 24.16.0+dfsg+~cs24.13.1-2
    • 24.17.0+dfsg+~cs24.13.2-1
    • 24.18.0+dfsg+~cs24.13.2-1
    • 24.19.0+dfsg+~cs24.13.3-1
    • 24.20.0+dfsg+~cs24.13.3-1
    • 24.20.0+dfsg+~cs24.13.3-2
    • 24.21.0+dfsg+~cs24.13.4-1
    • 24.22.0+dfsg+~cs24.19.2-1
    • 24.22.0+dfsg+~cs24.19.2-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nodejs Debian:14

    Versions
    • 20.19.2+dfsg-1
    • 20.19.4+dfsg-1
    • 20.19.5+dfsg+~cs20.19.12-1
    • 20.19.5+dfsg+~cs20.19.12-2
    • 20.19.5+dfsg+~cs20.19.12-3
    • 20.19.5+dfsg+~cs20.19.12-4
    • 20.19.5+dfsg+~cs20.19.24-1
    • 22.12.0+dfsg-1
    • 22.12.0+dfsg-2
    • 22.12.0+dfsg-3
    • 22.14.0+dfsg-1
    • 22.18.0+dfsg+~cs22.17.2-1
    • 22.18.0+dfsg+~cs22.17.2-2
    • 22.18.0+dfsg-1
    • 22.19.0+dfsg+~cs22.18.0-1
    • 22.21.1+dfsg+~cs22.19.0-1
    • 22.21.1+dfsg+~cs22.19.0-2
    • 22.21.1+dfsg+~cs22.19.0-3
    • 22.21.1+dfsg+~cs22.19.0-4
    • 22.21.1+dfsg+~cs22.19.0-5
    • 22.21.1+dfsg+~cs22.19.0-6
    • 22.22.0+dfsg+~cs22.19.13-1
    • 22.22.0+dfsg+~cs22.19.13-2
    • 22.22.0+dfsg+~cs22.19.6-1
    • 22.22.1+dfsg+~cs22.19.15-1
    • 22.22.2+dfsg+~cs22.19.15-1
    • 22.22.2+dfsg+~cs22.19.15-3
    • 24.11.1+dfsg+~cs24.10.1-1
    • 24.11.1+dfsg+~cs24.10.1-2
    • 24.12.0+dfsg+~cs24.10.4-1
    • 24.13.0+dfsg+~cs24.10.7-1
    • 24.13.0+dfsg+~cs24.10.7-2
    • 24.14.0+dfsg+~cs24.12.0-1
    • 24.14.0+dfsg+~cs24.12.0-2
    • 24.14.1+dfsg+~cs24.12.0-1
    • 24.15.0+dfsg+~cs24.12.2-1
    • 24.16.0+dfsg+~cs24.13.1-1
    • 24.16.0+dfsg+~cs24.13.1-2
    • 24.17.0+dfsg+~cs24.13.2-1
    • 24.18.0+dfsg+~cs24.13.2-1
    • 24.19.0+dfsg+~cs24.13.3-1
    • 24.20.0+dfsg+~cs24.13.3-1
    • 24.20.0+dfsg+~cs24.13.3-2
    • 24.21.0+dfsg+~cs24.13.4-1
    • 24.22.0+dfsg+~cs24.19.2-1
    • 24.22.0+dfsg+~cs24.19.2-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nodejs Ubuntu:Pro:14.04:LTS

    Versions
    • 0.10.15~dfsg1-4
    • 0.10.21~dfsg1-1
    • 0.10.22~dfsg1-2
    • 0.10.23~dfsg1-1
    • 0.10.23~dfsg1-2
    • 0.10.23~dfsg1-3
    • 0.10.24~dfsg1-1
    • 0.10.25~dfsg2-2
    • 0.10.25~dfsg2-2ubuntu1
    • 0.10.25~dfsg2-2ubuntu1.2
    • 0.10.25~dfsg2-2ubuntu1.2+esm1
    • 0.10.25~dfsg2-2ubuntu1.2+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nodejs Ubuntu:Pro:16.04:LTS

    Versions
    • 0.10.25~dfsg2-2ubuntu1
    • 4.2.2~dfsg-1
    • 4.2.3~dfsg-1
    • 4.2.4~dfsg-1ubuntu1
    • 4.2.4~dfsg-2
    • 4.2.6~dfsg-1ubuntu1
    • 4.2.6~dfsg-1ubuntu4
    • 4.2.6~dfsg-1ubuntu4.1
    • 4.2.6~dfsg-1ubuntu4.2
    • 4.2.6~dfsg-1ubuntu4.2+esm1
    • 4.2.6~dfsg-1ubuntu4.2+esm2
    • 4.2.6~dfsg-1ubuntu4.2+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nodejs Ubuntu:Pro:18.04:LTS

    Versions
    • 6.11.4~dfsg-1ubuntu1
    • 6.11.4~dfsg-1ubuntu2
    • 6.12.0~dfsg-1ubuntu1
    • 6.12.0~dfsg-2ubuntu1
    • 6.12.0~dfsg-2ubuntu2
    • 8.10.0~dfsg-2
    • 8.10.0~dfsg-2ubuntu0.2
    • 8.10.0~dfsg-2ubuntu0.3
    • 8.10.0~dfsg-2ubuntu0.4
    • 8.10.0~dfsg-2ubuntu0.4+esm1
    • 8.10.0~dfsg-2ubuntu0.4+esm2
    • 8.10.0~dfsg-2ubuntu0.4+esm3
    • 8.10.0~dfsg-2ubuntu0.4+esm4
    • 8.10.0~dfsg-2ubuntu0.4+esm5
    • 8.10.0~dfsg-2ubuntu0.4+esm6
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nodejs Ubuntu:Pro:20.04:LTS

    Versions
    • 10.15.2~dfsg-2ubuntu1
    • 10.17.0~dfsg-2ubuntu4
    • 10.17.0~dfsg-2ubuntu6
    • 10.19.0~dfsg-3ubuntu1
    • 10.19.0~dfsg-3ubuntu1.1
    • 10.19.0~dfsg-3ubuntu1.2
    • 10.19.0~dfsg-3ubuntu1.3
    • 10.19.0~dfsg-3ubuntu1.5
    • 10.19.0~dfsg-3ubuntu1.6
    • 10.19.0~dfsg-3ubuntu1.6+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nodejs Ubuntu:Pro:22.04:LTS

    Versions
    • 12.22.5~dfsg-5ubuntu1
    • 12.22.7~dfsg-2ubuntu1
    • 12.22.7~dfsg-2ubuntu3
    • 12.22.9~dfsg-1ubuntu2
    • 12.22.9~dfsg-1ubuntu3
    • 12.22.9~dfsg-1ubuntu3.1
    • 12.22.9~dfsg-1ubuntu3.2
    • 12.22.9~dfsg-1ubuntu3.3
    • 12.22.9~dfsg-1ubuntu3.4
    • 12.22.9~dfsg-1ubuntu3.5
    • 12.22.9~dfsg-1ubuntu3.6
    • 12.22.9~dfsg-1ubuntu3.6+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nodejs Ubuntu:24.04:LTS

    Versions
    • 18.13.0+dfsg1-1ubuntu2
    • 18.19.1+dfsg-2ubuntu4
    • 18.19.1+dfsg-6ubuntu1
    • 18.19.1+dfsg-6ubuntu2
    • 18.19.1+dfsg-6ubuntu5
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nodejs Ubuntu:26.10

    Versions
    • 22.22.1+dfsg+~cs22.19.15-1ubuntu1
    • 24.16.0+dfsg+~cs24.13.1-2ubuntu1
    • 24.18.0+dfsg+~cs24.13.2-1ubuntu1
    • 24.19.0+dfsg+~cs24.13.3-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • nodejs Ubuntu:26.04:LTS

    Versions
    • 20.19.4+dfsg-1
    • 20.19.5+dfsg+~cs20.19.12-4
    • 22.21.1+dfsg+~cs22.19.0-6ubuntu4
    • 22.22.0+dfsg+~cs22.19.6-1ubuntu2
    • 22.22.0+dfsg+~cs22.19.13-2ubuntu1
    • 22.22.1+dfsg+~cs22.19.15-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →