CVE-2026-11918
MediumCVSS 5.4Exploitation Probability (EPSS)
Low risk20th percentile - higher than 20% of all known CVEs
Summary
IBM ContextForge MCP Gateway <= v1.0.4 allows an authenticated user to bypass protection mechanisms due to incomplete recursive inspection of nested payload content. The flaw enables evasion of security controls through content hidden in nested structures.
Risk Assessment
An authenticated user could bypass the gateway's protection mechanisms, potentially leading to unauthorized access or execution of malicious content within the application context.
Recommendation
Upgrade IBM ContextForge MCP Gateway beyond v1.0.4 and implement complete recursive inspection of nested payload content.
Other vulnerabilities in IBM ContextForge MCP Gateway
See all- CVE-2026-78573Critical
IBM ContextForge MCP Gateway versions 1.0.0 through 1.0.7 allow a remote attacker to gain administrative access due to the use of default credentials.
- CVE-2026-77825Medium
IBM ContextForge MCP Gateway 1.0.0 through 1.0.8 was vulnerable to path traversal in its Admin API log-download endpoint (GET /v1/admin/logs/file). The path confinement check uses str.startswith() rather than proper boundary validation, allowing an authenticated admin to read .log, .jsonl, and .json files outside the configured LOG_FOLDER.
- CVE-2026-18489High
IBM ContextForge MCP Gateway - Translate utility <= 1.0.8 MCP Context Forge could allow a remote attacker to obtain sensitive information from other sessions due to exposure of data elements to the wrong session.
- CVE-2026-18486High
IBM ContextForge MCP Gateway <= v1.0.7 MCP Context Forge could allow a remote authenticated attacker to obtain sensitive credentials and escalate privileges due to improper validation of jq filters.
- CVE-2026-77822High
IBM ContextForge MCP Gateway could allow a remote authenticated attacker to obtain sensitive information due to server-side request forgery via DNS rebinding.
Original NVD description (English source)
IBM ContextForge MCP Gateway <= v1.0.4 IBM mcp-context-forge could allow an authenticated user to bypass protection mechanisms due to incomplete recursive inspection of nested payload content.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS