CVE-2026-49290
HighCVSS 7.6Exploitation Probability (EPSS)
Low risk43th percentile - higher than 43% of all known CVEs
Summary
Slopsmith, a web application for browsing and playing Rocksmith 2014 Custom DLC, has a path-traversal vulnerability that allows an attacker to write arbitrary files outside the extraction directory. In versions prior to 0.2.9-alpha.5, crafted PSARC or sloppak archives can lead to arbitrary remote code execution on the host.
Risk Assessment
This vulnerability poses a significant risk to organizations as it enables remote code execution, potentially leading to system takeover. With the default Docker configuration, an attacker can gain access to the system as root.
Recommendation
It is recommended to update to version 0.2.9-alpha.5, which addresses this vulnerability. Until updated, do not open PSARC or sloppak archives from untrusted sources and do not expose the Slopsmith instance to the public internet.
Original NVD description (English source)
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.