GO-2026-4866

Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509

Unknown highest severity reported · also known as CVE-2026-33810

2
catalog tools match this advisory
2
ship the vulnerable code in their release binary (Go tools analyzed with govulncheck)
No
in the CISA KEV catalog
0.3%
EPSS for CVE-2026-33810, percentile 28

Catalog tools matching GO-2026-4866

ToolVersion scannedPackageFixed inReleased binaryDeclared in or found inDispute
gatekeeper
Policy as Code
v3.23.1stdlib@v1.26.0
golang
v1.26.2vulnerable code in binarygator (release binary; govulncheck only)Dispute
kube-linter
Kubernetes Security
v0.8.3stdlib@v1.26.1
golang
v1.26.2vulnerable code in binarykube-linter-linux (release binary; govulncheck only)Dispute

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-2026-4866 · NVD CVE-2026-33810 · OSV GO-2026-4866

Grype data sources: https://pkg.go.dev/vuln/GO-2026-4866