CVE-2026-11918: medium-severity vulnerability in IBM ContextForge MCP Gateway
IBM ContextForge MCP Gateway is affected by security filter bypass via nested payload structures
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.4epss 0.3%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Affected products
IBM · ContextForge MCP GatewayRelated CVEs — IBM ContextForge MCP Gateway
In the same product, most dangerous first.
CVE-2026-18486HIGHIBM ContextForge MCP Gateway is affected by credential disclosure and privilege escalation via jq filter executionEPSS 0.6%CVE-2026-78573CRITICALIBM ContextForge MCP Gateway is affected by use of default credentialsEPSS 0.6%CVE-2026-77822HIGHIBM ContextForge MCP Gateway is affected by server-side request forgery (DNS rebinding) via the A2A agent invocation endpointEPSS 0.4%CVE-2026-77825MEDIUMIBM ContextForge MCP Gateway is affected by path traversalEPSS 0.3%CVE-2026-8355MEDIUMIBM ContextForge MCP Gateway is affected by server-side request forgeryEPSS 0.2%