GO-2026-6612

The HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream (refunding data for any sent-but-unread portion of the stream), and again when a request handler reads the buffered data. A malicious client can exploit this to bypass the configure

Critical highest severity reported · also known as CVE-2026-78663

28
catalog tools match this advisory
23
ship the vulnerable code in their release binary (Go tools analyzed with govulncheck)
No
in the CISA KEV catalog
0.6%
EPSS for CVE-2026-78663, percentile 50

Catalog tools matching GO-2026-6612

ToolVersion scannedPackageFixed inReleased binaryDeclared in or found inDispute
grype
Software Composition Analysis (SCA)
v0.121.0stdlib@v1.26.8
golang
v1.26.9vulnerable code in binarygrype (release binary; govulncheck only)Dispute
syft
SBOM Generation
v1.55.0stdlib@v1.26.8
golang
v1.26.9vulnerable code in binarysyft (release binary; govulncheck only)Dispute
kube-bench
Kubernetes Security
v0.16.0golang.org/x/net@v0.56.0
golang
0.60.0vulnerable code in binarygo.modDispute
tracee
Container Security › Runtime Security
v0.24.1golang.org/x/net@v0.38.0
golang
0.60.0vulnerable code in binarycmd/traceectl/go.modDispute
tracee
Container Security › Runtime Security
v0.24.1golang.org/x/net@v0.42.0
golang
0.60.0vulnerable code in binarygo.modDispute
bomber
Software Composition Analysis (SCA)
v0.5.1golang.org/x/net@v0.29.0
golang
0.60.0vulnerable code in binarygo.modDispute
polaris
Kubernetes Security
v10.2.5golang.org/x/net@v0.57.0
golang
0.60.0vulnerable code in binarygo.modDispute
sops
Secret Management
v3.13.3golang.org/x/net@v0.57.0
golang
0.60.0vulnerable code in binarygo.modDispute
gitleaks
Pre-commit & Secrets Detection
v8.30.1stdlib@v1.24.11
golang
v1.26.9vulnerable code in binarygitleaks (release binary; govulncheck only)Dispute
dockle
Container Security › Image Scanning
v0.4.15stdlib@v1.22.10
golang
v1.26.9vulnerable code in binarydockle (release binary; govulncheck only)Dispute
osv-scanner
Software Composition Analysis (SCA)
v2.7.0stdlib@v1.27.0
golang
v1.27.2vulnerable code in binaryosv-scanner_linux_amd64 (release binary; govulncheck only)Dispute
kubescape
Kubernetes Security
v4.0.17golang.org/x/net@v0.59.0
golang
0.60.0vulnerable code in binarygo.modDispute
KubeStellar Console
Kubernetes Security
v0.3.42golang.org/x/net@v0.58.0
golang
0.60.0vulnerable code in binarygo.modDispute
notation
Artifact Signing & Verification
v1.3.2stdlib@v1.23.8
golang
v1.26.9vulnerable code in binarynotation (release binary; govulncheck only)Dispute
conftest
Policy as Code
v0.71.1golang.org/x/net@v0.58.0
golang
0.60.0vulnerable code in binarygo.modDispute
gatekeeper
Policy as Code
v3.23.1golang.org/x/net@v0.56.0
golang
0.60.0vulnerable code in binarygo.modDispute
nuclei
API & Dynamic Testing (DAST)
v3.11.1golang.org/x/net@v0.56.0
golang
0.60.0vulnerable code in binarygo.modDispute
clair
Container Security › Image Scanning
v4.9.0golang.org/x/net@v0.47.0
golang
0.60.0vulnerable code in binarygo.modDispute
vet
Software Composition Analysis (SCA)
v1.20.0golang.org/x/net@v0.58.0
golang
0.60.0vulnerable code in binarygo.modDispute
slsa-verifier
Supply Chain Compliance
v2.7.1golang.org/x/net@v0.38.0
golang
0.60.0vulnerable code in binarygo.modDispute
kube-linter
Kubernetes Security
v0.8.3golang.org/x/net@v0.48.0
golang
0.60.0vulnerable code in binarygo.modDispute
kube-linter
Kubernetes Security
v0.8.3golang.org/x/net@v0.50.0
golang
0.60.0vulnerable code in binarytool-imports/go.modDispute
talisman
Pre-commit & Secrets Detection
v1.37.0stdlib@v1.24.2
golang
v1.26.9vulnerable code in binarytalisman_linux_amd64 (release binary; govulncheck only)Dispute
steampipe
Cloud Security
v2.4.9golang.org/x/net@v0.58.0
golang
0.60.0vulnerable code in binarygo.modDispute
dive
Container Security › Image Scanning
v0.13.1golang.org/x/net@v0.37.0
golang
0.60.0vulnerable code in binarygo.modDispute
kics
Infrastructure as Code Security
v2.2.0golang.org/x/net@v0.58.0
golang
0.60.0not analyzedgo.modDispute
cloudquery
Cloud Security
cli-v6.49.2golang.org/x/net@v0.59.0
golang
0.60.0vulnerable code not in binaryplugins/transformer/jsonflattener/go.modDispute
infisical
Secret Management
v0.167.4golang.org/x/net@v0.56.0
golang
0.60.0not analyzedbackend-go/go.modDispute
scorecard
Supply Chain Compliance
v5.6.0golang.org/x/net@v0.59.0
golang
0.60.0vulnerable code not in binarytools/go.modDispute
rekor
Artifact Signing & Verification
v1.5.5golang.org/x/net@v0.59.0
golang
0.60.0vulnerable code not in binaryhack/tools/go.modDispute

Vulnerabilities are known advisories that Grype matches against the dependencies declared in each project's release source (manifests and lockfiles, including development and build dependencies). A match does not mean the tool is exploitable: the vulnerable code may be unused, test-only, or not shipped in the released binary. KEV: listed in the CISA Known Exploited Vulnerabilities catalog. EPSS: FIRST's estimated probability of exploitation in the next 30 days. Both describe the vulnerability in general, not its exploitability through this tool; a match in a workflow file refers to a GitHub Action, not to shipped code. Released binary is only analyzed for Go tools with a Linux release binary; other tools show not analyzed.

Advisory sources

Go vulnerability GO-2026-6612 · NVD CVE-2026-78663 · OSV GO-2026-6612

Grype data sources: https://go.dev/cl/847187 · https://pkg.go.dev/vuln/GO-2026-6612