Vulnerability · Published Sep 4, 2026 · Assigned by ibm
CVE-2026-18905IBM ContextForge MCP Gateway is affected by server-side request forgery via DNS TOCTOU at tool invocation
High 7.7
In plain English
A high-severity server-side request forgery in ContextForge MCP Gateway (`mcp-contextforge-gateway`) from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Severity (CVSS 3.1)7.7High
Exploit odds (30 days)0.5%top 59.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
IBM ContextForge MCP Gateway (`mcp-contextforge-gateway`) <= v1.0.6 MCP Context Forge could allow a remote authenticated attacker to obtain sensitive information due to a DNS rebinding vulnerability during tool invocation.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | ContextForge MCP Gateway (`mcp-contextforge-gateway`) | <= v1.0.6 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
References
- https://www.ibm.com/support/pages/node/7286053 vendor-advisory, patch