CVE-2026-54672highCWE-427

CVE-2026-54672: high-severity vulnerability in electron-userland app-builder-lib

electron-updater: Uncontrolled search path elements within `AppImage` built by `app-builder-lib`

Published · Updated

Follow this CVE+ Monitor electron-builder+ Monitor app-builder-lib

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 0.2%
electron-updater allows for automatic updates for Electron apps. Prior to 26.15.0, AppImage targets built by app-builder-lib could use an empty path component when setting the LD_LIBRARY_PATH environment variable at runtime. This causes the current working directory to be added to the dynamic linker search path, which may allow an attacker to execute arbitrary code by placing a malicious shared library in the directory from which the AppImage is launched. This issue has been fixed in version 26.15.0.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
electron-userland · app-builder-libelectron-userland · electron-builder
Related CVEs — electron-userland app-builder-lib

In the same product, most dangerous first.

CVE-2024-39698HIGHCode Signing Bypass on Windows in electron-updater < 6.3.0-alpha.6EPSS 0.4%CVE-2026-54673HIGHelectron-updater: Cross-origin redirect leaks `PRIVATE-TOKEN` and mixed-case `Authorization` credentials in `builder-util-runtime`EPSS 0.4%CVE-2024-27303HIGHelectron-builder's NSIS installer - execute arbitrary code on the target machine (Windows only)EPSS 0.3%