Path Traversal in Devtoys
CVE-2026-22685
DevToys is a desktop app for developers. In versions from 2.0.0.0 to before 2.0.9.0, a path traversal vulnerability exists in the DevToys extension installation mechanism. When processing extension packages (NUPKG archives), DevToys does not sufficiently validate file paths contained within the archive. A malicious extension package could include crafted file entries such as ../../…/target-file, causing the extraction process to write files outside the intended extensions directory. This flaw enables an attacker to overwrite arbitrary files on the user’s system with the privileges of the DevToys process. Depending on the environment, this may lead to code execution, configuration tampering, or corruption of application or system files. This issue has been patched in version 2.0.9.0.
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
EPSS: 0.005 (37.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000
Affected products
- Devtoys
- Devtoys-App Devtoys — versions >= 2.0.0.0, < 2.0.9.0
Weakness classification (CWE)
References
- github.com/DevToys-app/DevToys/security/advisories/GHSA-ggxr-h6fm-p2qh (Vendor Advisory)
- github.com/DevToys-app/DevToys/pull/1643 (Patch, Issue Tracking)
- github.com/DevToys-app/DevToys/commit/02fb7d46d9c663a4ee6ed968baa6a8810405047f (Patch)
Frequently asked questions
- What is CVE-2026-22685?
- CVE-2026-22685 is a high-severity vulnerability in Devtoys, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-01-10.
- How severe is CVE-2026-22685?
- High severity. CVSS v3 base score is 8.8 out of 10.