CVE-2026-49290
Slopsmith has path traversal in archive extractors that allows arbitrary file write → potential RCE
Description
Slopsmith is a self-contained web application for browsing, playing, and practicing Rocksmith 2014 Custom DLC (CDLC). Prior to 0.2.9-alpha.5, a path-traversal vulnerability in Slopsmith's archive extractors allows an attacker to write arbitrary files outside the extraction directory by supplying a crafted PSARC or sloppak archive. With the default Docker configuration (running as root) and the ability to drop a file into the plugin directory, this escalates to arbitrary remote code execution on the host. Three archive extractors concatenated archive-entry filenames directly onto the extraction root without validation: `lib/psarc.py::unpack_psarc` — PSARC TOC filenames; `lib/patcher.py::unpack_psarc` — duplicate of the above in the patcher flow; `lib/sloppak.py::_unpack_zip` — bare `ZipFile.extractall()` with no member filter. Each accepts entry names containing `..` segments, absolute paths, or backslash separators. The Python `zipfile` module's default `extractall()` is documented as not preventing traversal when callers don't supply a member-filter callback. Version 0.2.9-alpha.5 patches the issue. Until updated, do not open PSARC or sloppak archives from untrusted sources, and do not expose the Slopsmith instance to the public internet. Docker users should also pull the latest image after the next slopsmith Docker image is published.
INFO
Published Date :
June 19, 2026, 6:16 p.m.
Last Modified :
Oct. 25, 2026, 11:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update Slopsmith to version 0.2.9-alpha.5.
- Avoid opening untrusted archives.
- Do not expose Slopsmith to the public internet.
- Update the Docker image if applicable.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-49290.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-49290 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-49290
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-49290 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-49290 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 25, 2026
Action Type Old Value New Value Added Translation Title: slopsmith de byrongamatos, Description: Slopsmith es una aplicación web autónoma para navegar, reproducir y practicar DLC personalizado (CDLC) de Rocksmith 2014. Antes de la versión 0.2.9-alpha.5, una vulnerabilidad de recorrido de ruta en los extractores de archivos de Slopsmith permite a un atacante escribir archivos arbitrarios fuera del directorio de extracción al proporcionar un archivo PSARC o sloppak manipulado. Con la configuración predeterminada de Docker (ejecutándose como root) y la capacidad de colocar un archivo en el directorio de plugins, esto escala a ejecución remota de código arbitraria en el host. Tres extractores de archivos concatenaron los nombres de archivo de las entradas del archivo directamente en la raíz de extracción sin validación: ’lib/psarc.py::unpack_psarc’ - nombres de archivo TOC de PSARC; ’lib/patcher.py::unpack_psarc’ - duplicado de lo anterior en el flujo del parcheador; ’lib/sloppak.py::_unpack_zip’ - un ’ZipFile.extractall()’ básico sin filtro de miembros. Cada uno acepta nombres de entrada que contienen segmentos ’..’, rutas absolutas o separadores de barra invertida. El ’extractall()’ predeterminado del módulo ’zipfile’ de Python está documentado como que no previene el recorrido cuando los llamadores no proporcionan una función de devolución de llamada de filtro de miembros. La versión 0.2.9-alpha.5 corrige el problema. Hasta que se actualice, no abra archivos PSARC o sloppak de fuentes no confiables y no exponga la instancia de Slopsmith a la internet pública. Los usuarios de Docker también deben extraer la última imagen después de que se publique la próxima imagen de Docker de Slopsmith. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 22, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-49290', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-22T17:04:05.730204Z'} -
New CVE Received by [email protected]
Jun. 19, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'byrongamatos', 'product': 'slopsmith', 'versions': [{'status': 'affected', 'version': '< 0.2.9-alpha.5'}]}] Added Description Slopsmith is a self-contained web application for browsing, playing, and practicing Rocksmith 2014 Custom DLC (CDLC). Prior to 0.2.9-alpha.5, a path-traversal vulnerability in Slopsmith's archive extractors allows an attacker to write arbitrary files outside the extraction directory by supplying a crafted PSARC or sloppak archive. With the default Docker configuration (running as root) and the ability to drop a file into the plugin directory, this escalates to arbitrary remote code execution on the host. Three archive extractors concatenated archive-entry filenames directly onto the extraction root without validation: `lib/psarc.py::unpack_psarc` — PSARC TOC filenames; `lib/patcher.py::unpack_psarc` — duplicate of the above in the patcher flow; `lib/sloppak.py::_unpack_zip` — bare `ZipFile.extractall()` with no member filter. Each accepts entry names containing `..` segments, absolute paths, or backslash separators. The Python `zipfile` module's default `extractall()` is documented as not preventing traversal when callers don't supply a member-filter callback. Version 0.2.9-alpha.5 patches the issue. Until updated, do not open PSARC or sloppak archives from untrusted sources, and do not expose the Slopsmith instance to the public internet. Docker users should also pull the latest image after the next slopsmith Docker image is published. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-22 Added CWE CWE-23 Added CWE CWE-36 Added Reference https://github.com/byrongamatos/slopsmith/commit/9cccac12a Added Reference https://github.com/byrongamatos/slopsmith/security/advisories/GHSA-8wr9-348x-xwmr Added Reference https://web.archive.org/web/20260522065709/https://github.com/byrongamatos/slopsmith Added Reference https://web.archive.org/web/20260522065709/https://github.com/byrongamatos/slopsmith