CVE-2026-115751 Details
Description
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.
A server-side request forgery (SSRF) vulnerability has been identified in Agentfront mcp-from-openapi versions 2.2.0 prior to 2.9.0. This vulnerability allows attackers to bypass the 'blockedHosts' denylist by using trailing-dot hostnames. By appending a root dot to a blocked hostname, attackers can fetch content from hosts that are normally operator-blocked. This issue arises because the 'blockedHosts' comparison does not normalize hostnames, allowing the trailing dot to evade detection.
Users can upgrade to Agentfront mcp-from-openapi version 2.9.0 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 23, 2026CISA-ADP
Assessed Oct 29, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/agentfront/mcp-from-openapi/security/advisories/GHSA-ff5q-5r4v-fw4v | CISA-ADP | AdvisoryBundleRemedyTechnical AnalysisVendor |
| https://github.com/agentfront/mcp-from-openapi/commit/47fb7a655de33958b0c923490ab244343eb5fc44 | [email protected] | Source CodeVendor |
| https://github.com/agentfront/mcp-from-openapi/pull/42 | [email protected] | Issue TrackingVendor |
| https://github.com/agentfront/mcp-from-openapi/releases/tag/v2.9.0 | [email protected] | Release NotesVendor |
| https://github.com/agentfront/mcp-from-openapi/security/advisories/GHSA-ff5q-5r4v-fw4v | [email protected] | AdvisoryBundleRemedyTechnical AnalysisVendor |
| https://www.vulncheck.com/advisories/mcp-from-openapi-2.2.0-before-2.9.0-ssrf-blockedhosts-bypass-via-trailing-dot-hostname | [email protected] | AdvisoryRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-184 | Incomplete List of Disallowed Inputs | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Agentfront mcp-from-openapi | <= 2.8.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 29, 2026 | CVE Modified | CISA-ADP |
| Oct 23, 2026 | New CVE Received | [email protected] |