GO-2026-6099: github.com/quic-go/webtransport-go fixed in 0.11.1

GO-2026-6099 PUBLISHED CVSS 8.699999809265137 HIGH

Record from OSV · Published August 18, 2026

github.com/quic-go/webtransport-go is fixed in 0.11.1 (Go Modules)

webtransport-go: Memory Exhaustion Attack due to Buffering of Unknown Capsules in github.com/quic-go/webtransport-go

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

Package	Ecosystem	Fixed in
github.com/quic-go/webtransport-go	Go Modules	0.11.1
spegel	Wolfi	0.7.4-r4
spegel-fips	Chainguard	0.7.4-r3
k3s-1.35	Chainguard	1.35.6.1-r7
rke2-runtime-1.35	Chainguard	1.35.6.2.1-r6
ipfs-cluster	Chainguard	1.1.6-r18, 1.1.6-r11
rke2-runtime-1.36	Chainguard	1.36.2.2.1-r8
k3s	Wolfi	1.36.2.1-r8
ipfs-cluster-fips	Chainguard	1.1.6-r11
rke2-runtime-1.34	Chainguard	1.34.9.2.1-r5
rke2-runtime-fips-1.36	Chainguard	1.36.1.2.2-r10
rke2-runtime-fips-1.35	Chainguard	1.35.6.2.1-r8

12 more packages have a fixed version. See every fix in Lookup.

CVSS 4.0

8.699999809265137

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

…and 4 more

The same record, from the CLI:

vulnetix vdb vuln GO-2026-6099
vulnetix vdb fixes GO-2026-6099

Or with curl, using the org id and key from your account page:

curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/GO-2026-6099/fixes/registry"

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