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Fencer Vulns
high 7.8

CVE-2026-54672 json

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

published 2026-06-30 4 mo ago modified 2026-08-18 2 mo ago also GHSA-7g7r-gx96-252g , EUVD-2026-40456

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits
0
none known

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.

Patch / fix

  • npm app-builder-lib 26.15.0
  • electron electron-builder 26.15.0
  • heroic-games-launcher openSUSE Tumbleweed 2.22.0-4.1

opensuse advisories openSUSE-SU-2026:11200-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-54672 updated cvss 7.3

electron-updater: app-builder-lib: Electron-updater: Arbitrary code execution through AppImage library loading vulnerability

  • Red Hat Build of Podman Desktop rh-podman-desktop.git Red Hat Enterprise Linux 9 goose, goose 1.23.2-2.el10_2 Red Hat Enterprise Linux 10 goose 1.23.2-2.el10_2
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
4 mo ago

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/electron-userland/electron-builder/security/advisories/GHSA-7g7r-gx96-252g referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
GitHub 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
npm app-builder-lib
<26.15.0
26.15.0

Affected products

  • electron-userland electron-builder
  • electron-userland app-builder-lib

Classification

Weakness
  • CWE-427 Uncontrolled Search Path Element

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.