CVE-2026-115751

Agentfront mcp-from-openapi from 2.2.0 before 2.9.0 contains a server-side request forgery vulnerability that allows attackers to bypass the ssrf.blockedHosts denylist using trailing-dot hostnames. Attackers who control an OpenAPI spec URL or redirect target can append a root dot to a blocked hostname to fetch content from operator-blocked hosts.

Score

CVSS 4.0 6.3 Medium

Status

Deferred - disclosure@vulncheck.com

Published

2026-10-23

Last modified

2026-10-23

Weaknesses

CWE-184

Affected products

• Mcp-from-openapi (Frontmcp)

References

• https://github.com/agentfront/mcp-from-openapi/security/advisories/GHSA-ff5q-5r4v-fw4v
• https://github.com/agentfront/mcp-from-openapi/pull/42
• https://github.com/agentfront/mcp-from-openapi/commit/47fb7a655de33958b0c923490ab244343eb5fc44
• https://github.com/agentfront/mcp-from-openapi/releases/tag/v2.9.0
• https://www.vulncheck.com/advisories/mcp-from-openapi-2.2.0-before-2.9.0-ssrf-blockedhosts-bypass-via-trailing-dot-host…