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TI-2026-79752 Aliases CVE-2026-115751GHSA-wfcf-h98w-gp9m

Incomplete denylist in Agentfront mcp-from-openapi allows SSRF via trailing dot

Priority MEDIUM 61CWE-184Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Agentfront mcp-from-openapi from 2.2.0 before 2.9.0 contains a server-side request forgery vulnerability in its ssrf.blockedHosts check. The denylist does not match hostnames that end with a root dot, so a blocked hostname with a trailing dot is still fetched (CWE-184). An unauthenticated remote attacker who controls an OpenAPI spec URL or a redirect target can reach operator-blocked hosts.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0025 16th percentileScored 2026-11-07
Fix Fixed mcp-from-openapi (agentfront): 2.9.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
agentfrontmcp-from-openapi2.2.0 to before 2.9.02.9.0Patch availableCNA
  • mcp-from-openapi Vendoragentfront Affected 2.2.0 to before 2.9.0 Fixed in 2.9.0 Patch available CNA

Remediation

Upgrade agentfront mcp-from-openapi to version 2.9.0 or later, which fixes the issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA mcp-from-openapi (agentfront) Fixed in 2.9.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    agentfront mcp-from-openapi — GitHub Security Advisory (GHSA-ff5q-5r4v-fw4v)

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-79751 Credential leak via cross-origin redirects in mcp-from-openapiPriority MEDIUM 61
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-23 Threatist record created from CVE-2026-115751
  2. 2026-10-23 Alias added: GHSA-wfcf-h98w-gp9m
  3. 2026-10-24 Priority changed: MEDIUM → LOW
  4. 2026-10-29 CISA SSVC decision points changed
  5. 2026-10-29 Priority changed: LOW → MEDIUM

References

Patch 2

Advisory 1

Other 1

  • TI-2026-21983 @enclave-vm/core is vulnerable to Sandbox Escape CVSS 3.1CRITICAL 10.0
  • TI-2026-18213 Sandbox Escape via Host Error Prototype Chain in enclave-vm CVSS 3.1CRITICAL 10.0
  • TI-2026-47732 FrontMCP: CodeCall sandbox escape -> host RCE via live Zod schema exposure by getTool CVSS 4.0CRITICAL 9.3
  • TI-2026-28764 FrontMCP Affected by SSRF via $ref Dereferencing in Untrusted OpenAPI Specifications CVSS 3.1HIGH 7.5
  • TI-2026-42765 mcp-from-openapi: Bypass of OpenAPI external $ref SSRF fix in latest FrontMCP and mcp-from-openapi CVSS 3.1HIGH 8.5
  • TI-2026-79751 Credential leak via cross-origin redirects in mcp-from-openapi CVSS 4.0MEDIUM 6.3
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences