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  4. CVE 2026 125926 server side request forgery in the server
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Back to active CVEs
Medium · CVSS 6.3CVE-2026-125926

Server-side request forgery in the server registration and update API in mcp-gateway-registryCVE-2026-125926

Answer in brief

CVE-2026-125926 records a Medium severity (CVSS 6.3) vulnerability in Server-side request forgery in the server registration and update API in mcp-gateway-registry. The current sources do not mark it as known exploited. The current feed maps AWS/mcp-gateway-registry (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 Nov 11, 2026Updated Nov 11, 2026Source checked Nov 11, 2026First seen by HOL Nov 11, 2026Material review Nov 11, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 6.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Not reported

Why this deserves its current priority

CVSS is 6.3. 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 AWS/mcp-gateway-registry (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
AWS/mcp-gateway-registrygeneric>=1.0.3 <=1.34.0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for AWS/mcp-gateway-registry.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Nov 11, 2026

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

  2. Source modified

    Nov 11, 2026

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

  3. First seen by HOL

    Nov 11, 2026

Sources and claim methodology

  • Source referenceaws.amazon.com
  • GitHub security advisorygithub.com
Upstream source description

Server-side request forgery (SSRF) in the server registration and update API in Amazon mcp-gateway-registry before 1.35.0 might allow an authenticated remote user to send requests from the gateway to internal network services and cloud instance metadata endpoints and read the responses via a crafted request. To remediate this issue, users should upgrade to version 1.35.0.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Missing authorization on the external management API in mcp-gateway-registry enables privilege escalation to registry administratorSame aws/mcp-gateway-registry package
  • Checkov by Prisma Cloud: Server-Side Request Forgery VulnerabilityAlso CWE-918
  • ideon: SSRF protection bypass via IPv6 transition addresses (NAT64 / 6to4 / IPv4-mapped) in link previewAlso CWE-918
  • Gotenberg 8.31.0 before 8.38.0 SSRF via IPv6 Zone Identifiers in IsPublicIPAlso CWE-918
  • ideon: Unauthenticated SSRF in /api/proxy/image via WHATWG bracketed/hex-mapped IPv6 bypass of isSafeUrl guardAlso CWE-918
  • ideon: Unauthenticated /api/links/preview endpoint is an open SSRF relay, and its IP blocklist misses the 0.0.0.0/:: unspecified-address bypassAlso CWE-918

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
CWE-918
Source
CVE List V5
Source checked
Nov 11, 2026
References
2 linked sources
Open source record