{"id":"CVE-2026-54673","aliases":["GHSA-p2f4-r6v6-j797"],"url":"https://o3.security/vulnerability/CVE-2026-54673","summary":"electron-updater: Cross-origin redirect leaks `PRIVATE-TOKEN` and mixed-case `Authorization` credentials in `builder-util-runtime`","details":"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.","published":"2026-06-30T22:11:37.587Z","modified":"2026-08-12T03:51:23.445385198Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"builder-util-runtime","fixedVersion":"9.7.0"}],"fix":{"url":"https://github.com/electron-userland/electron-builder/commit/22a7532bd01b9fb42cff7c58d599c7ad683569fe","label":"electron-userland/electron-builder@22a7532"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54673.json"},{"type":"ADVISORY","url":"https://github.com/electron-userland/electron-builder/security/advisories/GHSA-p2f4-r6v6-j797"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54673"},{"type":"FIX","url":"https://github.com/electron-userland/electron-builder/commit/22a7532bd01b9fb42cff7c58d599c7ad683569fe"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:23.445385198Z"}}