CVE-2026-54673
CVE-2026-54673 · electron-updater: Cross-origin redirect leaks `PRIVATE-TOKEN` and mixed-case `Authorization` credentials in `builder-util-runtime`
This page contains facts from public vulnerability sources. Check the original advisory before updating.
electron-updater allows for automatic updates for Electron apps. Prior to 9.7.0, the HTTP redirect handler (HttpExecutor.prepareRedirectUrlOptions) only stripped a credential header whose key string matched exactly lowercase "authorization", exposing credentials. 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. This issue has been fixed in version 9.7.0.
CVSS 8.2 · High · EPSS 0.4% · Public exploit · Fix available
- Published
- Updated
Stack: node
Affected products and versions
electron-builder
- Versions
- < 26.15.0: Affected
No fix published
builder-util-runtime
- Versions
- < 9.7.0: Affected
No fix published
builder-util-runtime npm
- Affected ranges
- SEMVER: < 9.7.0
Update to 9.7.0