browse-mcp has an arbitrary file write via unconfined download and state paths

Date Aug 25, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product npm · browse-mcp

CVE CVE-2026-55557

High-risk advisory CVE-2026-55557

Summary

browse-mcp has an arbitrary file write via unconfined download and state paths

Why it matters

GitHub has published a reviewed security advisory for browse-mcp. Prioritize it with other application dependency updates.

Operator check

Check whether browse-mcp is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 8.6.

Sources

GitHub Advisory GHSA-m9mq-7m7q-xc6p NVD — CVE-2026-55557 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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