@sigstore/oci sends the registry Authorization header to a cross-host blob-upload Location

Date Oct 30, 2026
Type Vendor advisory
Signal High-risk advisory
Vendor / Product npm ยท @sigstore/oci
CVE CVE-2026-118763
High-risk advisory CVE-2026-118763

Summary

@sigstore/oci sends the registry Authorization header to a cross-host blob-upload Location

Why it matters

GitHub has published a reviewed security advisory for @sigstore/oci. Prioritize it with other application dependency updates, especially because EPSS places it in the 23% percentile.

Operator check

Check whether @sigstore/oci is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.3%; percentile: 23%.

Sources

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.