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builder-util-runtime

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1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. High, CVSS 8.2npmAmendedPublished

    electron-updater: Cross-origin redirect leaks PRIVATE-TOKEN and mixed-case Authorization credentials in builder-util-runtime

    CVE-2026-54673 · GHSA-p2f4-r6v6-j797

    Affected
    • npm builder-util-runtime < 9.7.0
    Fixed in
    9.7.0· Vendor fix available
    Issue
    In electron-builder's builder-util-runtime package, the HTTP redirect handler (HttpExecutor.prepareRedirectUrlOptions) only stripped a credential header whose key string matched exactly lowercase "authorization". Other credential-bearing headers — most notably PRIVATE-TOKEN (used by GitLab's personal access token flow) and mixed-case Authorization (used by GitLab's Bearer/OAuth flow) — were not stripped and could be forwarded to an attacker-controlled cross-origin redirect destination. --- Details Root cause HttpExecutor.prepareRedirectUrlOptions (introduced in builder-util-runtime via PR #9211, first released in v26.0.20) performed its cross-origin credential strip with a single case-sensitive property check: JavaScript object property access is case-sensitive. The guard headers?.authorization evaluates to undefined (falsy) when the key is "Authorization", "AUTHORIZATION", or any other casing, so the branch is never entered and no header is deleted for those cases. Affected…

    Recommended action: Upgrade to 9.7.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:osv.dev (1)github.com (2)Source checked Evidence →