CVE-2026-54673
electron-updater allows for automatic updates for Electron apps.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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 4.0
- 8.2 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- electron/builder-util-runtime · electron/electron-builder
- Source
- security-advisories@github.com
References
- https://github.com/electron-userland/electron-builder/commit/22a7532bd01b9fb42cff7c58d599c7ad683569fePatch
- https://github.com/electron-userland/electron-builder/security/advisories/GHSA-p2f4-r6v6-j797Vendor Advisory, Exploit, Mitigation, Patch
- https://github.com/electron-userland/electron-builder/security/advisories/GHSA-p2f4-r6v6-j797Vendor Advisory, Exploit, Mitigation, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.