High severity · published Sep 4, 2026
CVE-2026-18905
IBM ContextForge MCP Gateway is affected by server-side request forgery via DNS TOCTOU at tool invocation
7.7
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CM
ContextForge MCP Gateway (`mcp-contextforge-gateway`) · IBM
<= v1.0.6 · source: vendor
CO
Contextforge · Ibm
through 1.0.6 · source: NVD
Affected product
CM
ContextForge MCP Gateway (`mcp-contextforge-gateway`)
IBM
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18905
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18905
Patch
https://www.ibm.com/support/pages/node/7286053
More from ContextForge MCP Gateway (`mcp-contextforge-gateway`)
9.8
CVE-2026-78573
IBM ContextForge MCP Gateway is affected by use of default credentials
9.6
CVE-2026-77822
IBM ContextForge MCP Gateway is affected by server-side request forgery (DNS rebinding) via the A2A agent invocation endpoint
8.8
CVE-2026-18486
IBM ContextForge MCP Gateway is affected by credential disclosure and privilege escalation via jq filter execution
5.4
CVE-2026-8355
IBM ContextForge MCP Gateway is affected by server-side request forgery
5.4
CVE-2026-11918
IBM ContextForge MCP Gateway is affected by security filter bypass via nested payload structures