Vulnerability · Published Oct 23, 2026 · Assigned by VulnCheck
CVE-2026-115751mcp-from-openapi 2.2.0 before 2.9.0 SSRF blockedHosts Bypass via Trailing-Dot Hostname
Low 3.7
In plain English
A low-severity security flaw in mcp-from-openapi from agentfront. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).
Severity (CVSS 3.1)3.7Low
Exploit odds (30 days)0.2%top 83.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| agentfront | mcp-from-openapi | 2.2.0 – before 2.9.0 |
Weakness: CWE-184 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- GitHub Security Advisory (GHSA-ff5q-5r4v-fw4v) vendor-advisory
- https://github.com/agentfront/mcp-from-openapi/pull/42 issue-tracking, patch
- https://github.com/agentfront/mcp-from-openapi/commit/47fb7a655de33958b0c923490ab244343eb5fc44 patch
- mcp-from-openapi v2.9.0 Release Notes release-notes
- VulnCheck Advisory: mcp-from-openapi 2.2.0 before 2.9.0 SSRF blockedHosts Bypass via Trailing-Dot Hostname third-party-advisory