CVE-2026-81486: bsmi021 mcp-file-context-server Path Resolution index.ts read_context path traversal

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-27 · updated 2026-08-28
Weakness: CWE-22

Description

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.

Affected products

bsmi021 mcp-file-context-server: 1.0.0

References

https://github.com/bsmi021/mcp-file-context-server/
https://github.com/bsmi021/mcp-file-context-server/issues/15
https://vuldb.com/cve/CVE-2026-81486
https://vuldb.com/submit/887137
https://vuldb.com/vuln/395980
https://vuldb.com/vuln/395980/cti
https://vuldb.com/submit/887137

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