Vulnerability-Lookup

CVE-2026-54672 (GCVE-0-2026-54672)

Vulnerability from cvelistv5 – Published: 2026-06-30 22:15 – Updated: 2026-07-01 13:47

Title

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

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.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-01 13:47 UTC

CWE

CWE-427 - Uncontrolled Search Path Element

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7836 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/electron-userland/electron-bui…	x_refsource_CONFIRM
https://github.com/electron-userland/electron-bui…	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version	CPE status
electron-userland	electron-builder	Affected: < 26.15.0	guessed
electron-userland	app-builder-lib	Affected: < 26.15.0	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-54672

Vulnerability from fkie_nvd - Published: 2026-06-30 23:17 - Updated: 2026-08-18 17:37

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/electron-userland/electron-builder/commit/01b8ba979	Patch
	security-advisories@github.com	https://github.com/electron-userland/electron-builder/security/advisories/GHSA-7g7r-gx96-252g	Vendor Advisory, Exploit

Impacted products

	Vendor	Product	Version
	electron	electron-builder	*

JSON

To clipboard

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      "affectedData": [
        {
          "product": "electron-builder",
          "vendor": "electron-userland",
          "versions": [
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              "status": "affected",
              "version": "\u003c 26.15.0"
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          "product": "app-builder-lib",
          "vendor": "electron-userland",
          "versions": [
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GHSA-7G7R-GX96-252G

Vulnerability from github – Published: 2026-07-24 14:00 – Updated: 2026-07-24 14:00

Summary

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

Details

Summary

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 vulnerability is the same class as CVE-2024-41817.

Details

The vulnerability existed in two independent code paths within app-builder-lib (toolset 1.0.0) and through upstream dependency app-builder-bin (toolset 0.0.0).

Path 1 — Modern static runtime (`AppRun` generated by TypeScript)

The AppRun script generated by app-builder-lib contained this line:

export LD_LIBRARY_PATH="${APPDIR}/usr/lib:${LD_LIBRARY_PATH}"

When LD_LIBRARY_PATH is not set in the environment at launch time, this evaluates to:

/path/to/app.AppDir/usr/lib:

The trailing : is treated by the dynamic linker as an empty path component, which resolves to the current working directory. If an attacker can place a malicious shared library (e.g., libfoo.so) in the directory from which the AppImage is executed, that library will be loaded in place of the legitimate one, resulting in arbitrary code execution.

The same issue affected PATH, XDG_DATA_DIRS, and GSETTINGS_SCHEMA_DIR in the same script.

export LD_LIBRARY_PATH="${APPDIR}/usr/lib${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}"

Path 2 — Legacy FUSE2 toolset (`app-builder-bin`)

AppImage targets built using the legacy FUSE2 toolset (toolsets.appimage = "0.0.0") delegated AppRun script generation to the app-builder-bin Go binary, which contained the same vulnerable template:

https://github.com/develar/app-builder/blob/7004925f95d8f034fc88d7e782c9aa7583debb8e/pkg/package-format/appimage/templates/AppRun.sh#L27

Impact

An attacker with the ability to write files to the directory from which a vulnerable AppImage is executed can cause arbitrary shared libraries to be loaded into the application process, resulting in arbitrary code execution with the privileges of the user running the AppImage.

Affected Versions

This was fully resolved in app-builder-lib@26.15.0 (commit 01b8ba979, PR #9829) when app-builder-bin was removed from the dependency tree entirely and all AppImage construction was migrated to the TypeScript implementation.

Workarounds

Set LD_LIBRARY_PATH to a non-empty value before launching the AppImage, so that the concatenation does not produce an empty path component. Alternatively, avoid running AppImage files from world-writable directories such as /tmp.

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "app-builder-lib"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "26.15.0"
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          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
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  "aliases": [
    "CVE-2026-54672"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-427"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-24T14:00:59Z",
    "nvd_published_at": "2026-06-30T23:17:27Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\n`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.\n\nThis vulnerability is the same class as [`CVE-2024-41817`](https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-8rxc-922v-phg8).\n\n### Details\n\nThe vulnerability existed in two independent code paths within `app-builder-lib` (toolset `1.0.0`) and through upstream dependency `app-builder-bin` (toolset `0.0.0`).\n\n#### Path 1 \u2014 Modern static runtime (`AppRun` generated by TypeScript)\n\nThe `AppRun` script generated by `app-builder-lib` contained this line:\n\n```bash\nexport LD_LIBRARY_PATH=\"${APPDIR}/usr/lib:${LD_LIBRARY_PATH}\"\n```\n\nWhen `LD_LIBRARY_PATH` is not set in the environment at launch time, this evaluates to:\n\n```\n/path/to/app.AppDir/usr/lib:\n```\n\nThe trailing `:` is treated by the dynamic linker as an empty path component, which resolves to the current working directory. If an attacker can place a malicious shared library (e.g., `libfoo.so`) in the directory from which the `AppImage` is executed, that library will be loaded in place of the legitimate one, resulting in arbitrary code execution.\n\nThe same issue affected `PATH`, `XDG_DATA_DIRS`, and `GSETTINGS_SCHEMA_DIR` in the same script.\n\n```bash\nexport LD_LIBRARY_PATH=\"${APPDIR}/usr/lib${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}\"\n```\n\n#### Path 2 \u2014 Legacy FUSE2 toolset (`app-builder-bin`)\n\n`AppImage` targets built using the legacy FUSE2 toolset (`toolsets.appimage = \"0.0.0\"`) delegated `AppRun` script generation to the `app-builder-bin` Go binary, which contained the same vulnerable template:\n\nhttps://github.com/develar/app-builder/blob/7004925f95d8f034fc88d7e782c9aa7583debb8e/pkg/package-format/appimage/templates/AppRun.sh#L27\n\n### Impact\n\nAn attacker with the ability to write files to the directory from which a vulnerable `AppImage` is executed can cause arbitrary shared libraries to be loaded into the application process, resulting in arbitrary code execution with the privileges of the user running the `AppImage`.\n\n### Affected Versions\n\nThis was fully resolved in **`app-builder-lib@26.15.0`** (commit [`01b8ba979`](https://github.com/electron-userland/electron-builder/commit/01b8ba979), PR [#9829](https://github.com/electron-userland/electron-builder/pull/9829)) when `app-builder-bin` was removed from the dependency tree entirely and all AppImage construction was migrated to the TypeScript implementation.\n\n### Workarounds\n\nSet `LD_LIBRARY_PATH` to a non-empty value before launching the `AppImage`, so that the concatenation does not produce an empty path component. Alternatively, avoid running `AppImage` files from world-writable directories such as `/tmp`.",
  "id": "GHSA-7g7r-gx96-252g",
  "modified": "2026-07-24T14:00:59Z",
  "published": "2026-07-24T14:00:59Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/electron-userland/electron-builder/security/advisories/GHSA-7g7r-gx96-252g"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54672"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron-userland/electron-builder/commit/01b8ba979d1db44543e18d07b4ad94953deb10ea"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/electron-userland/electron-builder"
    },
    {
      "type": "WEB",
      "url": "https://github.com/electron-userland/electron-builder/releases/tag/electron-builder@26.15.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "electron-updater: Uncontrolled search path elements within `AppImage` built by `app-builder-lib`"
}

OPENSUSE-SU-2026:11200-1

Vulnerability from csaf_opensuse - Published: 2026-07-07 00:00 - Updated: 2026-09-17 17:13

Summary

heroic-games-launcher-2.22.0-4.1 on GA media

Severity

Moderate

Scope

3 vulnerabilities in this advisory, including CVE-2026-54672.

CVE-2026-54672

Recommended: 4 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CVE-2026-54672 (GCVE-0-2026-54672)

FKIE_CVE-2026-54672

GHSA-7G7R-GX96-252G

Summary

Details

Path 1 — Modern static runtime (AppRun generated by TypeScript)

Path 2 — Legacy FUSE2 toolset (app-builder-bin)

Impact

Affected Versions

Workarounds

OPENSUSE-SU-2026:11200-1

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour

Path 1 — Modern static runtime (`AppRun` generated by TypeScript)

Path 2 — Legacy FUSE2 toolset (`app-builder-bin`)