Race Condition Affecting mcp-firecrawl package, versions <3.22.3-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published26 Jun 2026
- disclosed4 Feb 2026
Introduced: 4 Feb 2026
CVE-2026-25536 (opens in a new tab)How to fix?
Upgrade Minimos:latest mcp-firecrawl to version 3.22.3-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream mcp-firecrawl package and not the mcp-firecrawl package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. From version 1.10.0 to 1.25.3, cross-client response data leak when a single McpServer/Server and transport instance is reused across multiple client connections, most commonly in stateless StreamableHTTPServerTransport deployments. This issue has been patched in version 1.26.0.
References
- https://www.cve.org/CVERecord?id=CVE-2026-25536
- https://github.com/advisories/GHSA-345p-7cg4-v4c7
- https://osv.dev/vulnerability/MINI-p2hc-wj6f-q334
- https://osv.dev/vulnerability/CVE-2026-25536
- https://github.com/modelcontextprotocol/typescript-sdk/issues/204
- https://github.com/modelcontextprotocol/typescript-sdk/issues/243
- https://github.com/modelcontextprotocol/typescript-sdk/security/advisories/GHSA-345p-7cg4-v4c7