Skip to main content
VulnerabilityPublished

CVE-2026-53710: IBM mcp-context-forge · Code Injection

Affects IBM mcp-context-forgeSource CVE Database V5

0
Compare

Not known to be exploited · CVSS 10.0 Critical : upgrade to 1.0.2 as a priority.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
10.0Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.1% chance of exploitation in 30 days – higher than 66% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.0.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade mcp-context-forge and ibm/mcp-context-forge to 1.0.2.

Affected software

ProductAffectedFixed in
IBMmcp-context-forgeAffected
  • <1.0.2
Fixed in
  • 1.0.2
GitHubibm/mcp-context-forgepkg:github/ibm/mcp-context-forgeOther threatsAffected
  • <1.0.2
Fixed in
  • 1.0.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade to IBM mcp-context-forge version 1.0.2 or later, where this vulnerability is fixed. Until upgrading, restrict network access to the python_sandbox_server, especially the HTTP/SSE transport, to trusted users only. No other official mitigations are documented.

Description

MCP Context Forge is an AI gateway, registry, and proxy for MCP, A2A, REST, and gRPC APIs. Prior to 1.0.2, the python_sandbox_server in mcp-servers/python/python_sandbox_server/src/python_sandbox_server/server_fastmcp.py exposes raw getattr through safe_builtins, omits a required _getattr_ guard, and relies on validate_code checks for literal dangerous dunder strings. An attacker can construct dunder names at runtime, traverse the Python class hierarchy, reach subprocess.Popen, and execute OS commands with the server process privileges through the execute_code MCP tool. The HTTP/SSE transport can expose this tool without authentication, while stdio-only deployments have reduced network reachability. The issue affects the python_sandbox_server subproject and does not directly affect the core Context Forge gateway or proxy components. This issue is fixed in version 1.0.2.

References

Community reviews

Loading reviews…