High [CVE-2026-54672] Arbitrary code execution through AppImage library loading vulnerability
This high-severity Red Hat Linux advisory covers CVE-2026-54672.
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Summary
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.
This could allow the attacker to run arbitrary code on the affected system. The vulnerability in electron-builder's AppImage packaging only affects applications distributed as AppImage format, where an empty LD_LIBRARY_PATH component causes the current working directory to be added to the dynamic linker search path.
Red Hat products that bundle electron-builder components are not affected: the goose RPM is distributed as an RPM package (not AppImage), and Podman Desktop uses Flatpak and tar.gz targets on Linux (AppImage is not configured in its electron-builder config). The vulnerable AppImage code path is never exercised in any Red Hat product.
Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H). Weakness: CWE-427.
Red Hat lists Red Hat Build of Podman Desktop; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9 as not affected.
- < 26.15.0
Official advisory · high-confidence parse· fetched 21 days ago·verify at source
- 26.15.0
Official advisory · high-confidence parse· fetched 21 days ago·verify at source
Mitigation checklist
- 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.
Official advisory · high-confidence parse· fetched 21 days ago·verify at source
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