What is CVE-2026-3680?

CVE-2026-3680 is a medium-severity vulnerability in Ryuzakishinji Biome-Mcp-Server, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-03-07.

How severe is CVE-2026-3680?

Medium severity. CVSS v3 base score is 6.3 out of 10.

RCE in Ryuzakishinji Biome-Mcp-Server

CVE-2026-3680

A security flaw has been discovered in RyuzakiShinji biome-mcp-server up to 1.0.0. Affected by this issue is some unknown functionality of the file biome-mcp-server.ts. Performing a manipulation results in command injection. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The patch is named 335e1727147efeef011f1ff8b05dd751d8a660be. Applying a patch is the recommended action to fix this issue.

EPSS: 0.011 (62.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Ryuzakishinji Biome-mcp-server — versions 1.0

Weakness classification (CWE)

References

cna@vuldb.com (vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (issue-tracking, patch)
cna@vuldb.com (exploit)
cna@vuldb.com (issue-tracking, patch)
cna@vuldb.com (product)

Frequently asked questions

What is CVE-2026-3680?: CVE-2026-3680 is a medium-severity vulnerability in Ryuzakishinji Biome-Mcp-Server, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-03-07.
How severe is CVE-2026-3680?: Medium severity. CVSS v3 base score is 6.3 out of 10.