Path Traversal in Element Labs Lm Studio
CVE-2026-119979
LM Studio before 0.4.22+1 contains a path traversal vulnerability in the model downloader's resolveDownloadRequest that allows attackers to write files outside the models directory using backslash-separated traversal filenames. Attackers can trick users into downloading a crafted model repository that plants a plugin manifest.json, install-state.json and mcp-bridge-config.json, running an attacker-supplied Python payload on every launch.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- lmstudio.ai/changelog/lmstudio-v0.4.22 (release-notes)
- www.vulncheck.com/advisories/lm-studio-before-0.4.22-1-path-traversal-via-model… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-119979?
- CVE-2026-119979 is a high-severity vulnerability in Element Labs Lm Studio, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-10-30.
- How severe is CVE-2026-119979?
- High severity. CVSS v3 base score is 8.8 out of 10.