@xhmikosr/decompress: Path traversal via symlink chain
Impact
When extracting an untrusted archive with the default decompress(input, output) API, a crafted archive containing a chain of symlink entries can make a later entry resolve outside the output directory. The lexical containment checks pass, but the kernel follows the planted symlinks to a path outside output, letting an attacker write (and read) files outside the intended extraction directory. Overwriting startup scripts or configuration can lead to remote code execution.
This is a bypass of the hardening in GHSA-mp2f-45pm-3cg9. Any application that extracts attacker-controlled archives is affected.
Patches
Fixed in 11.1.4 (latest) and backported to 10.2.2 (release-v10 dist-tag). Upgrade to one of these.
The unmaintained upstream decompress package shares this flaw and will not be patched. Migrate to @xhmikosr/decompress@11.1.4 (or @10.2.2).
Workarounds
None. Do not extract untrusted archives on affected versions. If you cannot upgrade, validate entries out of band and reject any whose resolved path escapes the target directory.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | decompress | <= 4.2.1 | sin corrección |
| Paquete de npm | @xhmikosr/decompress | >= 11.0.0, < 11.1.4, < 10.2.2 | 11.1.4, 10.2.2 |
Referencias
- https://github.com/XhmikosR/decompress/security/advisories/GHSA-hrh2-vp3x-79xf
- https://nvd.nist.gov/vuln/detail/CVE-2026-101894
- https://github.com/XhmikosR/decompress/commit/5f4b2f64abb31bbaf1fef8975b595fd7df2558d8
- https://github.com/XhmikosR/decompress/commit/f6c88c668216d6a12c6cecf4fe0b6c70bf77050a
- https://github.com/XhmikosR/decompress
- https://github.com/XhmikosR/decompress/releases/tag/v10.2.2
- https://github.com/XhmikosR/decompress/releases/tag/v11.1.4
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N- Debilidad (CWE)
CWE-22, CWE-59- Plataforma
- npm
- Paquete
decompress, @xhmikosr/decompress- Publicada
- 29.09.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-hrh2-vp3x-79xf - CC BY 4.0
Historial de vulnerabilidades: decompress
Todas las vulnerabilidades publicadas de este paquete (Paquete de npm), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 5
- Primera → última
- 09.2020 09.2026
- Sin corrección
- 4
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 3
- Media 2
Divulgaciones por año
- 2020: 1
- 2021: 0
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 4
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@xhmikosr/decompress: Path traversal via symlink chain esta entrada
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