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  4. CVE 2026 18905 ibm contextforge mcp gateway is affected by
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Back to active CVEs
High · CVSS 7.7CVE-2026-18905

IBM ContextForge MCP Gateway is affected by server-side request forgery via DNS TOCTOU at tool invocationCVE-2026-18905

Answer in brief

CVE-2026-18905 records a High severity (CVSS 7.7) vulnerability in IBM ContextForge MCP Gateway is affected by server-side request forgery via DNS TOCTOU at tool invocation. The current sources do not mark it as known exploited. The current feed maps IBM/ContextForge MCP Gateway (`mcp-contextforge-gateway`) (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 4, 2026Updated Sep 15, 2026Source checked Oct 19, 2026First seen by HOL Sep 4, 2026Material review Sep 15, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.7
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps IBM/ContextForge MCP Gateway (`mcp-contextforge-gateway`) (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:ibm:contextforge:*:*:*:*:*:python:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
IBM/ContextForge MCP Gateway (`mcp-contextforge-gateway`)generic<=v1.0.6= v1.0.6

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for IBM/ContextForge MCP Gateway (`mcp-contextforge-gateway`).
  2. 2Review the reported fix. Source-reported solution: IBM strongly recommends addressing the vulnerability now. Product(s)Version(s) number and/or range Remediation/Fix/InstructionsIBM ContextForge MCP Gateway<=v1.0.6 https://github.com/IBM/mcp-context-forge/pull/5925_

Evidence timeline and material changes

  1. Published upstream

    Sep 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 4, 2026

Sources and claim methodology

  • Source referenceibm.com
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • agit8or1 clientst0r Property URL Importer property_url_importer.py _fetch_html server-side request forgeryAlso CWE-918
  • smrealms smr Album Website AlbumEditProcessor.php isUrlReachable server-side request forgeryAlso CWE-918

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
CWE-918
Source
CVE List V5
Source checked
Oct 19, 2026
References
1 linked source
Open source record