---
cve: "CVE-2026-53486"
severity: "CRITICAL"
cvss: 9.1
epss: "0.7%"
vendor: "XhmikosR"
kev: false
exploited: false
published: "2026-07-14 21:17:05"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-23T18:33:52+02:00"
---

# CVE-2026-53486

> 9.1 CRITICAL · 🧪 PoC

## Beschreibung

The decompress package for Node.js extracts archives. Prior to 10.2.1 and 11.1.3, archive extraction can create files and links outside the target directory. When extracting an archive to a directory, a crafted archive can read or write files outside that directory because hardlink and symlink entries are created without checking where targets point, path containment used a string prefix comparison, and file modes failed to remove setuid, setgid, or sticky bits. This issue is fixed in @xhmikosr/decompress versions 10.2.1 and 11.1.3.

## CNA-Record (Kanon, cvelistV5)

- CNA: **GitHub_M**
- State: PUBLISHED
- Stand: 2026-07-15 13:26:56
- CNA-CVSS: **9.1** (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Schwachstellen-Klasse

- **CWE-22** — Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
- **CWE-59** — Improper Link Resolution Before File Access ('Link Following')
  The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
- **CWE-732** — Incorrect Permission Assignment for Critical Resource
  The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors.

## Angriffsmuster (CAPEC)

- [CAPEC-64 — Using Slashes and URL Encoding Combined to Bypass Validation Logic](https://capec.mitre.org/data/definitions/64.html) _(Severity: High)_
- [CAPEC-76 — Manipulating Web Input to File System Calls](https://capec.mitre.org/data/definitions/76.html) _(Severity: Very High)_
- [CAPEC-78 — Using Escaped Slashes in Alternate Encoding](https://capec.mitre.org/data/definitions/78.html) _(Severity: High)_
- [CAPEC-79 — Using Slashes in Alternate Encoding](https://capec.mitre.org/data/definitions/79.html) _(Severity: High)_
- [CAPEC-126 — Path Traversal](https://capec.mitre.org/data/definitions/126.html) _(Severity: Very High)_

## Patch verfügbar (OSV)

- 742ab1a8fe0e49d1437069cabe394ff89d41ae01 (Commit)
- 921c957ca09437139599d86d5f4aa963f1b3fa82 (Commit)

## Referenzen

- <https://github.com/XhmikosR/decompress/security/advisories/GHSA-mp2f-45pm-3cg9>
- <https://github.com/XhmikosR/decompress/commit/281cefa00cd4275c10479bc5f1abba6b14dee8bd>
- <https://github.com/XhmikosR/decompress/commit/60b5299402e72b0b53ca2e55222e9a1ccb44afae>
- <https://github.com/XhmikosR/decompress/commit/9fcda4b0a66ca22dc8d337f9b0e7c30293c5fb89>
- <https://github.com/XhmikosR/decompress/commit/aca5aac415dc04a6fae5200e51368cff436a09dd>
- <https://github.com/XhmikosR/decompress/releases/tag/v10.2.1>
- <https://github.com/XhmikosR/decompress/releases/tag/v11.1.3>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-53486/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_