CVE-2026-57497
Description
webtransport-go is an implementation of the WebTransport protocol. Prior to 0.11.1, Session.parseNextCapsule() in session.go skips an unknown WebTransport capsule on the HTTP/3 request stream by calling io.ReadAll on the capsule reader, retaining the complete declared capsule body in memory. A malicious peer can send a large unknown capsule and cause a client or server to allocate memory for the full payload; QUIC flow control does not bound the total retained allocation because reading advances the flow-control window while the received bytes remain in memory. The resulting memory and resource exhaustion can disrupt or crash the affected process. This issue is fixed in version 0.11.1.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/quic-go/webtransport-goGo | < 0.11.1 | 0.11.1 |
Affected products
33- osv-coords32 versionspkg:apk/chainguard/k3s-static-1.35pkg:apk/chainguard/rke2-runtime-1.34pkg:apk/chainguard/rke2-runtime-fips-1.32pkg:apk/chainguard/rke2-runtime-fips-1.35pkg:apk/wolfi/k3s-1.33pkg:apk/chainguard/k3s-1.33pkg:apk/chainguard/k3s-1.35pkg:apk/chainguard/rke2-runtime-1.35pkg:apk/wolfi/k3spkg:apk/wolfi/k3s-static-1.33pkg:apk/wolfi/k3s-static-1.34pkg:apk/wolfi/kubopkg:apk/chainguard/rke2-runtime-1.36pkg:apk/wolfi/k3s-staticpkg:apk/chainguard/k3s-static-1.33pkg:apk/chainguard/kubopkg:apk/chainguard/rke2-runtime-fips-1.34pkg:apk/wolfi/k3s-static-1.35pkg:apk/chainguard/k3s-staticpkg:apk/chainguard/k3s-static-1.34pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2016.0pkg:apk/chainguard/ipfs-clusterpkg:apk/wolfi/k3s-1.34pkg:apk/wolfi/ipfs-clusterpkg:apk/wolfi/k3s-1.35pkg:apk/wolfi/spegelpkg:apk/chainguard/k3spkg:apk/chainguard/k3s-1.34pkg:apk/chainguard/spegelpkg:apk/chainguard/spegel-fipspkg:apk/chainguard/ipfs-cluster-fipspkg:apk/chainguard/rke2-runtime-fips-1.36
< 1.35.6.1-r7+ 31 more
- (no CPE)range: < 1.35.6.1-r7
- (no CPE)range: < 1.34.9.2.1-r5
- (no CPE)range: < 1.32.13.2.2-r3
- (no CPE)range: < 1.35.6.2.1-r8
- (no CPE)range: < 1.33.13.1-r2
- (no CPE)range: < 1.33.13.1-r2
- (no CPE)range: < 1.35.6.1-r7
- (no CPE)range: < 1.35.6.2.1-r6
- (no CPE)range: < 1.36.2.1-r8
- (no CPE)range: < 1.33.13.1-r2
- (no CPE)range: < 1.34.9.1-r7
- (no CPE)range: < 0.42.0-r7
- (no CPE)range: < 1.36.2.2.1-r8
- (no CPE)range: < 1.36.2.1-r8
- (no CPE)range: < 1.33.13.1-r2
- (no CPE)range: < 0.42.0-r7
- (no CPE)range: < 1.34.9.2.1-r5
- (no CPE)range: < 1.35.6.1-r7
- (no CPE)range: < 1.36.2.1-r8
- (no CPE)range: < 1.34.9.1-r7
- (no CPE)range: < 0.0.20260827T195228-160000.1.1
- (no CPE)range: < 1.1.6-r11
- (no CPE)range: < 1.34.9.1-r7
- (no CPE)range: < 1.1.6-r11
- (no CPE)range: < 1.35.6.1-r7
- (no CPE)range: < 0.7.4-r4
- (no CPE)range: < 1.36.2.1-r8
- (no CPE)range: < 1.34.9.1-r7
- (no CPE)range: < 0.7.4-r4
- (no CPE)range: < 0.7.4-r3
- (no CPE)range: < 1.1.6-r11
- (no CPE)range: < 1.36.1.2.2-r10
- Range: <0.11.1
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-g35j-m5xg-vh3qghsaADVISORY
- github.com/quic-go/webtransport-go/commit/3aecd11736579530ff067651c30a543eb0b4b8c4nvdWEB
- github.com/quic-go/webtransport-go/pull/290nvdWEB
- github.com/quic-go/webtransport-go/releases/tag/v0.11.1nvdWEB
- github.com/quic-go/webtransport-go/security/advisories/GHSA-g35j-m5xg-vh3qnvdWEB
News mentions
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