CVE-2026-54673

A flaw was found in electron-updater, a component used for automatic updates in Electron applications. This vulnerability allows a remote attacker to obtain sensitive user credentials. When an Electron application performs an HTTP redirect, the electron-updater's redirect handler fails to strip certain credential-bearing headers, such as PRIVATE-TOKEN or mixed-case Authorization headers. This oversight can lead to these credentials being forwarded to an attacker-controlled destination, resulting in information disclosure.

A flaw was found in electron-updater where credential-bearing HTTP headers (PRIVATE-TOKEN, mixed-case Authorization) are not stripped during cross-origin redirects. This could allow an attacker who controls a redirect destination to capture authentication credentials used during application update checks.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.