Path Traversal in Bsmi021 Mcp-File-Context-Server
CVE-2026-81486
A vulnerability was detected in bsmi021 mcp-file-context-server 1.0.0. Affected by this issue is the function read_context of the file src/index.ts of the component Path Resolution. Performing a manipulation of the argument path results in path traversal. It is possible to initiate the attack remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.002
Affected products
- Bsmi021 Mcp-File-Context-Server — versions 1.0.0
Weakness classification (CWE)
References
- github.com/bsmi021/mcp-file-context-server/ (product)
- github.com/bsmi021/mcp-file-context-server/issues/15 (issue-tracking, exploit)
- vuldb.com/cve/CVE-2026-81486 (third-party-advisory)
- vuldb.com/submit/887137 (third-party-advisory)
- vuldb.com/vuln/395980 (technical-description, vdb-entry)
- vuldb.com/vuln/395980/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-81486?
- CVE-2026-81486 is a medium-severity vulnerability in Bsmi021 Mcp-File-Context-Server, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-08-27.
- How severe is CVE-2026-81486?
- Medium severity. CVSS v3 base score is 5.3 out of 10.