Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-8355— IBM ContextForge MCP Gateway is affected by server-side request forgery

Quick assessment

Affected
IBM ContextForge MCP 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 0.1.0 至 1.0.5 版本存在服务端请求伪造（SSRF）漏洞。该漏洞允许拥有网关创建权限的已认证用户，向内部网络资源及云元数据端点发起任意的 HTTP POST 请求。 漏洞成因在于启用 OAuth 的网关注册过程中，系统未对 参数进行有效验证。当使用 OAuth 客户端凭证认证方式注册网关时，攻击者可提供指向内部服务、云元数据端点（如 AWS IMDSv1、GCP 或 Azure）或绑定在 localhost 上的服务的恶意 。随后，应用会立即向该攻

AI Predicted 8.8 Difficulty: Moderate
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-8355

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
IBM ContextForge MCP Gateway is affected by server-side request forgery
Source: CVE Program / CVE List V5
Vulnerability Description
IBM ContextForge MCP Gateway 0.1.0 through 1.0.5 is vulnerable to a server-side request Forgery (SSRF) that allows authenticated users with gateway creation privileges to perform arbitrary HTTP POST requests to internal network resources and cloud metadata endpoints. The vulnerability occurs during OAuth-enabled gateway registration when the system fails to validate the oauth_config.token_url parameter. When registering a gateway with OAuth client credentials authentication, an attacker can supply a malicious token_url pointing to internal services, cloud metadata endpoints (AWS IMDSv1, GCP, Azure), or localhost-bound services. The application immediately performs an HTTP POST request to the attacker-controlled URL with form-encoded credentials in the body. If the response cannot be parsed as a valid OAuth token response, up to 256 characters of the response body are reflected back to the attacker in the HTTP 502 error message. This vulnerability bypasses existing SSRF protections that are applied to the gateway.url field but not to OAuth configuration parameters.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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 0.1.0 ~ 1.0.5 -

II. Public POCs for CVE-2026-8355

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-8355

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-8355 (1)

Same Patch Batch · IBM · 2026-10-19 · 38 CVEs total

CVE-2026-107400 8.8 HIGH Security Vulnerability identified in IBM TRIRIGA - GWT Mock Authentication
CVE-2026-109126 8.8 HIGH IBM Verify Identity Access and IBM Security Verify Access Hard-coded Credentials
CVE-2026-10743 8.8 HIGH IBM MQ Race Condition
CVE-2026-10574 8.8 HIGH IBM MQ Buffer Overflow
CVE-2026-10572 8.8 HIGH IBM MQ Buffer Overflow
CVE-2026-105453 8.4 HIGH IBM Sterling Connect:Direct for Unix Improper Privilege Management
CVE-2026-107366 8.3 HIGH Langflow OSS Authorization Bypass Through User-Controlled Key
CVE-2026-12665 8.1 HIGH IBM MQ Buffer Overflow
CVE-2026-6719 7.5 HIGH IBM Concert Software Use of Insufficiently Random Values
CVE-2026-12148 7.5 HIGH IBM MQ Deserialization of Untrusted Data
CVE-2026-3295 7.4 HIGH IBM Cloud Pak System Cross-Site Scripting
CVE-2026-19178 6.8 MEDIUM TS4500 Tape Library Race Condition
CVE-2025-36061 6.5 MEDIUM TS4500 Tape Library Denial of Service
CVE-2026-12350 6.5 MEDIUM IBM MQ Deserialization of Untrusted Data
CVE-2026-12343 6.5 MEDIUM IBM MQ Denial of Service
CVE-2026-12155 6.5 MEDIUM IBM MQ Deserialization of Untrusted Data
CVE-2026-11829 6.5 MEDIUM IBM MQ Buffer Overflow
CVE-2026-14511 6.5 MEDIUM IBM MQ Denial of Service
CVE-2025-36252 6.3 MEDIUM TS4500 Tape Library Insufficient Session Expiration
CVE-2026-4413 6.1 MEDIUM IBM Concert Software Cross-Site Scripting

Showing top 20 of 38 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: ContextForge MCP Gateway
Same vendor: IBM
Same weakness: CWE-918

V. Comments for CVE-2026-8355

No comments yet

Leave a comment