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[release-2.8] Bump Go toolchain to 1.26.3 and x/net to v0.54.0 (Snyk findings)#2439

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twmb wants to merge 2 commits intorelease-2.8from
tb/snyk-go-1.26.3-release-2.8
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[release-2.8] Bump Go toolchain to 1.26.3 and x/net to v0.54.0 (Snyk findings)#2439
twmb wants to merge 2 commits intorelease-2.8from
tb/snyk-go-1.26.3-release-2.8

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@twmb twmb commented May 10, 2026

Summary

Backport to release-2.8: bump backend Go toolchain from 1.26.1 -> 1.26.3 and golang.org/x/net from 0.52.0 -> 0.54.0 to clear HIGH Snyk stdlib findings.

Fixes:

  • CVE-2026-33811 Double Free in std/net (GO-2026-4981, SNYK-GOLANG-STDNET-16535159)
  • CVE-2026-39836 Uncaught Exception in std/net (GO-2026-4971, SNYK-GOLANG-STDNET-16535161)
  • CVE-2026-33814 Infinite loop in std/net/http (GO-2026-4918, SNYK-GOLANG-STDNETHTTP-16535158)
  • CVE-2026-33814 Infinite loop in golang.org/x/net/http2 (x/net -> 0.54.0)

Companion PR for master: #2438

Test plan

  • CI green on release-2.8 (build, lint, unit, integration)
  • Snyk re-scan on release-2.8 no longer flags the four advisories above

twmb added 2 commits May 10, 2026 15:39
- CVE-2026-33811 Double Free in std/net (GO-2026-4981)
- CVE-2026-39836 Uncaught Exception in std/net (GO-2026-4971)
- CVE-2026-33814 Infinite loop in std/net/http (GO-2026-4918)
- CVE-2026-33814 Infinite loop in golang.org/x/net/http2 (x/net -> 0.54.0)
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