CVE-2026-18905— IBM ContextForge MCP Gateway is affected by server-side request forgery via DNS TOCTOU at tool invocation
Quick assessment
Affected
IBM ContextForge MCP Gateway (`mcp-contextforge-gateway`)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
IBM ContextForge MCP Gateway ( ) 版本 ≤ v1.0.6 存在一个 DNS 重绑定（DNS rebinding）漏洞。该漏洞发生在调用工具（tool invocation）期间，可能被远程已认证的攻击者利用，从而获取敏感信息。
Possible ATT&CK Techniques 1 AI
T1019Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| IBM | ContextForge MCP Gateway (`mcp-contextforge-gateway`) | <= v1.0.6 |
affected |
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I. Basic Information for CVE-2026-18905
Vulnerability Information
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Vulnerability Title
IBM ContextForge MCP Gateway is affected by server-side request forgery via DNS TOCTOU at tool invocation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| IBM | ContextForge MCP Gateway (`mcp-contextforge-gateway`) | <= v1.0.6 |
cpe:2.3:a:ibm:contextforge-mcp-gateway:*:*:*:*:*:*:*:*
|
|
II. Public POCs for CVE-2026-18905
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-18905 (1)
Same Patch Batch · IBM · 2026-09-04 · 64 CVEs total
| CVE-2026-18658 | 9.8 CRITICAL | IBM Operational Decision Manager for Aug 2026 - Multiple CVEs addressed |
| CVE-2026-19274 | 9.6 CRITICAL | IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent con |
| CVE-2026-18486 | 8.8 HIGH | IBM ContextForge MCP Gateway is affected by credential disclosure and privilege escalation |
| CVE-2026-19298 | 8.8 HIGH | Langflow is vulnerable to remote code execution due to authorization policy bypass in the |
| CVE-2026-19305 | 8.6 HIGH | Langflow is vulnerable to Server-Side Request Forgery due to missing or bypassable URL val |
| CVE-2026-77822 | 8.2 HIGH | IBM ContextForge MCP Gateway is affected by server-side request forgery (DNS rebinding) vi |
| CVE-2026-18221 | 8.1 HIGH | IBM i is Affected By Improper Authorization and Authentication Vulnerabilities in DDM / DR |
| CVE-2026-19303 | 8.1 HIGH | Langflow is vulnerable to arbitrary file write and arbitrary file deletion due to unvalida |
| CVE-2026-18175 | 8.1 HIGH | IBM i is Affected By Improper Authorization and Authentication Vulnerabilities in DDM / DR |
| CVE-2026-19283 | 7.7 HIGH | IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent con |
| CVE-2026-19306 | 7.7 HIGH | Langflow is vulnerable to arbitrary local file read due to path traversal in ChatInput, bu |
| CVE-2026-19304 | 7.7 HIGH | Langflow is vulnerable to Server-Side Request Forgery due to missing or bypassable URL val |
| CVE-2026-81832 | 7.7 HIGH | IBM App Connect Enterprise and IBM Integration Bus for z/OS Adapter nodes are vulnerable t |
| CVE-2026-19300 | 7.5 HIGH | Langflow is vulnerable to information disclosure due to cross-user MCP tool cache collisio |
| CVE-2026-18489 | 7.4 HIGH | IBM ContextForge Translate is affected by cross-client credential context confusion |
| CVE-2026-5522 | 6.7 MEDIUM | QRadar contains hard-coded credentials |
| CVE-2026-17622 | 6.5 MEDIUM | Langflow OSS is affected by arbitrary file read due to path traversal vulnerabilities in f |
| CVE-2026-14470 | 6.5 MEDIUM | Langflow OSS is affected by arbitrary file read due to path traversal vulnerabilities in f |
| CVE-2026-9186 | 6.5 MEDIUM | Langflow is vulnerable to stored cross-site scripting and IP spoofing due to unsanitized M |
| CVE-2026-18887 | 6.5 MEDIUM | IBM i is Affected By Sensitive Information Exposure Vulnerability in PASE [] |
Showing top 20 of 64 CVEs. View all on vendor page → →
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V. Comments for CVE-2026-18905
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