p PatchFirst

CVE-2026-78669

CVE-2026-78669 · Excessive CPU consumption from repeated initial window changes in net/http

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

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

A malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS frames containing SETTINGS_INITIAL_WINDOW_SIZE values.

CVSS 7.5 · High · EPSS 0.6% · Fix available

Published
Updated

Stack: system · containers

Affected products and versions

  • net/http

    Versions
    • ≥ 0, < 1.26.9: Affected (semver)

    Update to 1.26.9

  • net/http/internal/http2

    Versions
    • ≥ 1.27.0-0, < 1.27.2: Affected (semver)

    Update to 1.27.2

  • golang.org/x/net/http2

    Versions
    • ≥ 0, < 0.60.0: Affected (semver)

    Update to 0.60.0

  • golang-1.19 Debian:12

    Versions
    • 1.19.10-1
    • 1.19.10-2
    • 1.19.11-1
    • 1.19.12-1
    • 1.19.12-2
    • 1.19.12-2~bpo11+1
    • 1.19.12-2~bpo12+1
    • 1.19.13-1
    • 1.19.13-1~bpo11+1
    • 1.19.13-1~bpo12+1
    • 1.19.8-2
    • 1.19.9-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • golang-1.24 Debian:13

    Versions
    • 1.24.12-1
    • 1.24.13-1
    • 1.24.13-2
    • 1.24.4-1
    • 1.24.4-2
    • 1.24.4-3
    • 1.24.4-4
    • 1.24.7-1
    • 1.24.8-1
    • 1.24.9-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • golang-1.26 Debian:14

    Versions
    • 1.26.0-1
    • 1.26.1-1
    • 1.26.2-1
    • 1.26.2-2
    • 1.26.2-3
    • 1.26.3-1
    • 1.26.3-1~bpo13+1
    • 1.26.3-2
    • 1.26.3-2~bpo13+1
    • 1.26.4-1
    • 1.26.4-1~bpo13+1
    • 1.26.5-1
    • 1.26.5-1~bpo13+1
    • 1.26.6-1
    • 1.26.6-2
    • 1.26.7-1
    • 1.26.7-1~bpo13+1
    • 1.26.8-1
    • 1.26.8-1~bpo13+1
    • 1.26.8-2
    • 1.26~rc2-1
    • 1.26~rc3-1
    • 1.26~rc3-2
    Affected ranges
    • ECOSYSTEM: < 1.26.9-1

    Update to 1.26.9-1

  • golang-1.27 Debian:14

    Versions
    • 1.27.0-1
    • 1.27.0-1~bpo13+1
    • 1.27.1-1
    • 1.27.1-2
    • 1.27.1-2~bpo13+1
    • 1.27.2-1~bpo13+1
    • 1.27~rc1-1
    • 1.27~rc2-1
    • 1.27~rc3-1
    Affected ranges
    • ECOSYSTEM: < 1.27.2-1

    Update to 1.27.2-1

  • golang-golang-x-net Debian:12

    Versions
    • 1:0.10.0-1
    • 1:0.11.0-1
    • 1:0.14.0-1
    • 1:0.15.0-1
    • 1:0.15.0-2
    • 1:0.17.0+dfsg-1
    • 1:0.19.0+dfsg-1
    • 1:0.20.0+dfsg-1
    • 1:0.21.0+dfsg-1
    • 1:0.22.0+dfsg-1
    • 1:0.23.0+dfsg-1
    • 1:0.24.0+dfsg-1
    • 1:0.25.0+dfsg-1
    • 1:0.26.0+dfsg-1
    • 1:0.26.0+dfsg-2
    • 1:0.27.0-1
    • 1:0.27.0-2
    • 1:0.47.0-1
    • 1:0.47.0-2
    • 1:0.53.0-1
    • 1:0.53.0-2
    • 1:0.53.0-2~bpo13+1
    • 1:0.55.0-1
    • 1:0.56.0-1
    • 1:0.57.0-1
    • 1:0.58.0-1
    • 1:0.60.0-1
    • 1:0.7.0+dfsg-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • golang-golang-x-net Debian:13

    Versions
    • 1:0.27.0-2
    • 1:0.47.0-1
    • 1:0.47.0-2
    • 1:0.53.0-1
    • 1:0.53.0-2
    • 1:0.53.0-2~bpo13+1
    • 1:0.55.0-1
    • 1:0.56.0-1
    • 1:0.57.0-1
    • 1:0.58.0-1
    • 1:0.60.0-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • golang-golang-x-net Debian:14

    Versions
    • 1:0.27.0-2
    • 1:0.47.0-1
    • 1:0.47.0-2
    • 1:0.53.0-1
    • 1:0.53.0-2
    • 1:0.53.0-2~bpo13+1
    • 1:0.55.0-1
    • 1:0.56.0-1
    • 1:0.57.0-1
    • 1:0.58.0-1
    Affected ranges
    • ECOSYSTEM: < 1:0.60.0-1

    Update to 1:0.60.0-1

  • golang-1.10 Ubuntu:14.04:LTS

    Versions
    • 1.10.4-2ubuntu1~14.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • golang-1.10 Ubuntu:16.04:LTS

    Versions
    • 1.10.4-2ubuntu1~16.04.1
    • 1.10.4-2ubuntu1~16.04.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • golang-1.6 Ubuntu:16.04:LTS

    Versions
    • 1.6-0ubuntu1
    • 1.6-0ubuntu2
    • 1.6-0ubuntu3
    • 1.6-0ubuntu4
    • 1.6-0ubuntu5
    • 1.6.1-0ubuntu1
    • 1.6.2-0ubuntu5~16.04
    • 1.6.2-0ubuntu5~16.04.2
    • 1.6.2-0ubuntu5~16.04.3
    • 1.6.2-0ubuntu5~16.04.4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • golang-golang-x-net-dev Ubuntu:Pro:16.04:LTS

    Versions
    • 0.0+git20150226.3d87fd6-3
    • 0.0+git20151007.b846920+dfsg-1
    • 1:0.0+git20150817.66f0418-1
    • 1:0.0+git20160110.4fd4a9f-1
    • 1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm1
    • 1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • juju-core Ubuntu:Pro:16.04:LTS

    Versions
    • 1.24.6-0ubuntu3
    • 1.25.0-0ubuntu1
    • 1.25.0-0ubuntu2
    • 1.25.0-0ubuntu3
    • 2.0~beta4-0ubuntu2
    • 2.0~beta6-0ubuntu1.16.04.1
    • 2.0~beta7-0ubuntu1.16.04.1
    • 2.0~beta12-0ubuntu1.16.04.1
    • 2.0~beta15-0ubuntu2.16.04.1
    • 2.0.0-0ubuntu0.16.04.2
    • 2.0.2-0ubuntu0.16.04.1
    • 2.0.2-0ubuntu0.16.04.2
    • 2.3.1-0ubuntu0.16.04.1
    • 2.3.2-0ubuntu0.16.04.1
    • 2.3.7-0ubuntu0.16.04.1
    • 2.3.7-0ubuntu0.16.04.1+esm1
    • 2.3.7-0ubuntu0.16.04.1+esm2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lxd Ubuntu:Pro:16.04:LTS

    Versions
    • 0.20-0ubuntu4
    • 0.21-0ubuntu3
    • 0.21-0ubuntu5
    • 0.22-0ubuntu1
    • 0.22-0ubuntu2
    • 0.23-0ubuntu1
    • 0.23-0ubuntu2
    • 0.23-0ubuntu3
    • 0.24-0ubuntu2
    • 0.24-0ubuntu3
    • 0.24-0ubuntu4
    • 0.25-0ubuntu1
    • 0.26-0ubuntu2
    • 0.26-0ubuntu3
    • 0.27-0ubuntu1
    • 0.27-0ubuntu2
    • 2.0.0~beta1-0ubuntu3
    • 2.0.0~beta1-0ubuntu4
    • 2.0.0~beta2-0ubuntu1
    • 2.0.0~beta2-0ubuntu2
    • 2.0.0~beta3-0ubuntu1
    • 2.0.0~beta3-0ubuntu2
    • 2.0.0~beta3-0ubuntu3
    • 2.0.0~beta3-0ubuntu4
    • 2.0.0~beta4-0ubuntu1
    • 2.0.0~beta4-0ubuntu2
    • 2.0.0~beta4-0ubuntu3
    • 2.0.0~beta4-0ubuntu4
    • 2.0.0~beta4-0ubuntu5
    • 2.0.0~beta4-0ubuntu6
    • 2.0.0~beta4-0ubuntu7
    • 2.0.0~rc1-0ubuntu1
    • 2.0.0~rc1-0ubuntu2
    • 2.0.0~rc1-0ubuntu3
    • 2.0.0~rc2-0ubuntu2
    • 2.0.0~rc2-0ubuntu3
    • 2.0.0~rc3-0ubuntu1
    • 2.0.0~rc3-0ubuntu2
    • 2.0.0~rc3-0ubuntu3
    • 2.0.0~rc3-0ubuntu4
    • 2.0.0~rc4-0ubuntu1
    • 2.0.0~rc5-0ubuntu1
    • 2.0.0~rc6-0ubuntu1
    • 2.0.0~rc6-0ubuntu2
    • 2.0.0~rc7-0ubuntu1
    • 2.0.0~rc7-0ubuntu2
    • 2.0.0~rc8-0ubuntu1
    • 2.0.0~rc8-0ubuntu2
    • 2.0.0~rc8-0ubuntu3
    • 2.0.0~rc8-0ubuntu5
    • 2.0.0~rc8-0ubuntu6
    • 2.0.0~rc8-0ubuntu7
    • 2.0.0~rc9-0ubuntu2
    • 2.0.0~rc9-0ubuntu3
    • 2.0.0~rc9-0ubuntu4
    • 2.0.0~rc9-0ubuntu5
    • 2.0.0-0ubuntu1
    • 2.0.0-0ubuntu2
    • 2.0.0-0ubuntu3
    • 2.0.0-0ubuntu4
    • 2.0.1-0ubuntu1~16.04.1
    • 2.0.2-0ubuntu1~16.04.1
    • 2.0.3-0ubuntu1~ubuntu16.04.2
    • 2.0.4-0ubuntu1~ubuntu16.04.1
    • 2.0.5-0ubuntu1~ubuntu16.04.1
    • 2.0.8-0ubuntu1~ubuntu16.04.1
    • 2.0.8-0ubuntu1~ubuntu16.04.2
    • 2.0.9-0ubuntu1~16.04.1
    • 2.0.9-0ubuntu1~16.04.2
    • 2.0.10-0ubuntu1~16.04.1
    • 2.0.10-0ubuntu1~16.04.2
    • 2.0.11-0ubuntu1~16.04.2
    • 2.0.11-0ubuntu1~16.04.4
    • 2.0.11-0ubuntu1~16.04.4+esm1
    • 2.0.11-0ubuntu1~16.04.4+esm2
    • 2.0.11-0ubuntu1~16.04.4+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • containerd Ubuntu:Pro:16.04:LTS

    Versions
    • 0.2.1-0ubuntu4~16.04
    • 0.2.3-0ubuntu1~16.04
    • 0.2.5-0ubuntu1~16.04.1
    • 1.2.6-0ubuntu1~16.04.2
    • 1.2.6-0ubuntu1~16.04.3
    • 1.2.6-0ubuntu1~16.04.4
    • 1.2.6-0ubuntu1~16.04.5
    • 1.2.6-0ubuntu1~16.04.6
    • 1.2.6-0ubuntu1~16.04.6+esm1
    • 1.2.6-0ubuntu1~16.04.6+esm2
    • 1.2.6-0ubuntu1~16.04.6+esm4
    • 1.2.6-0ubuntu1~16.04.6+esm5
    • 1.2.6-0ubuntu1~16.04.6+esm6
    • 1.2.6-0ubuntu1~16.04.6+esm7
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • golang-1.13 Ubuntu:Pro:16.04:LTS

    Versions
    • 1.13.8-1ubuntu1~16.04.2
    • 1.13.8-1ubuntu1~16.04.3
    • 1.13.8-1ubuntu1~16.04.3+esm2
    • 1.13.8-1ubuntu1~16.04.3+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • golang-1.18 Ubuntu:Pro:16.04:LTS

    Versions
    • 1.18.1-1ubuntu1~16.04.6
    • 1.18.1-1ubuntu1~16.04.6+esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • google-guest-agent Ubuntu:Pro:16.04:LTS

    Versions
    • 20201217.02-0ubuntu1~16.04.0
    • 20230426.00-0ubuntu2~16.04.3
    • 20231004.02-0ubuntu1~16.04.1
    • 20231004.02-0ubuntu1~16.04.2
    • 20240716.00-0ubuntu1~16.04.0
    • 20240716.00-0ubuntu1~16.04.0+esm1
    • 20240716.00-0ubuntu1~16.04.0+esm2
    • 20240716.00-0ubuntu1~16.04.0+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • google-osconfig-agent Ubuntu:Pro:16.04:LTS

    Versions
    • 20210219.00-0ubuntu1~16.04.0
    • 20230504.00-0ubuntu1~16.04.0
    • 20240320.00-0ubuntu1~16.04.0
    • 20240524.03-0ubuntu2~16.04.0
    • 20251028.00-0ubuntu2~16.04.1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • golang-1.10 Ubuntu:18.04:LTS

    Versions
    • 1.10~rc1-1
    • 1.10~rc1-1ubuntu1
    • 1.10~rc1-2ubuntu1
    • 1.10~rc2-1ubuntu1
    • 1.10-1ubuntu1
    • 1.10.1-1ubuntu2
    • 1.10.4-2ubuntu1~18.04.1
    • 1.10.4-2ubuntu1~18.04.2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • lxd Ubuntu:Pro:18.04:LTS

    Versions
    • 2.18-0ubuntu6
    • 2.19-0ubuntu1
    • 2.20-0ubuntu3
    • 2.20-0ubuntu4
    • 2.21-0ubuntu1
    • 2.21-0ubuntu2
    • 2.21-0ubuntu3
    • 2.21-0ubuntu4
    • 3.0.0~beta2-0ubuntu3
    • 3.0.0~beta3-0ubuntu3
    • 3.0.0~beta5-0ubuntu2
    • 3.0.0~beta7-0ubuntu1
    • 3.0.0-0ubuntu1
    • 3.0.0-0ubuntu2
    • 3.0.0-0ubuntu3
    • 3.0.0-0ubuntu4
    • 3.0.1-0ubuntu1~18.04.1
    • 3.0.2-0ubuntu1~18.04.1
    • 3.0.3-0ubuntu1~18.04.1
    • 3.0.3-0ubuntu1~18.04.2
    • 3.0.3-0ubuntu1~18.04.2+esm1
    • 3.0.3-0ubuntu1~18.04.2+esm2
    • 3.0.3-0ubuntu1~18.04.2+esm3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • containerd Ubuntu:Pro:18.04:LTS

    Versions
    • 0.2.5-0ubuntu2
    • 1.2.6-0ubuntu1~18.04.1
    • 1.2.6-0ubuntu1~18.04.2
    • 1.3.3-0ubuntu1~18.04.1
    • 1.3.3-0ubuntu1~18.04.2
    • 1.3.3-0ubuntu1~18.04.3
    • 1.3.3-0ubuntu1~18.04.4
    • 1.4.4-0ubuntu1~18.04.2
    • 1.5.2-0ubuntu1~18.04.1
    • 1.5.2-0ubuntu1~18.04.2
    • 1.5.2-0ubuntu1~18.04.3
    • 1.5.5-0ubuntu3~18.04.1
    • 1.5.5-0ubuntu3~18.04.2
    • 1.5.9-0ubuntu1~18.04.1
    • 1.5.9-0ubuntu1~18.04.2
    • 1.6.12-0ubuntu1~18.04.1
    • 1.6.12-0ubuntu1~18.04.1+esm1
    • 1.6.12-0ubuntu1~18.04.1+esm2
    • 1.6.12-0ubuntu1~18.04.1+esm3
    • 1.6.12-0ubuntu1~18.04.1+esm4
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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