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Advisory record · GO-2026-6911

SSRF and credential leak via unvalidated Location header in github.com/mark3labs/mcp-go

No CVSS score

Published by OSV at 5 Nov 2026, 22:55 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/mark3labs/mcp-goGoall versionsNo fixed version yet
Identifiers
GO-2026-6911
Published
5 Nov 2026
Updated
5 Nov 2026

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

No source has published a CVSS score for this record yet.

  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 5 Nov 2026, 23:15 UTC Confirmed by OSV
  2. 5 Nov 2026, 23:34 UTC First seen by agentprime

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.