CVSS 4.0
6.3 mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:NCVE-2026-125926 Server-side request forgery in the server registration and update API in mcp-gateway-registry
Medium (6.3) in aws mcp-gateway-registry. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.
On this page
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.
Severity
CVSS 3.1
8.5 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N- EPSS
- 0.3% estimated probability of exploitation activity in the next 30 days; 22nd percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-918 Server-Side Request Forgery (SSRF)
- OWASP Top 10
- A01:2025 Broken Access Control
- Published
- Modified
- Assigned by
- AMZN (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
Ask an AI about this CVE
Show the prompt
Explain CVE-2026-125926 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-125926?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-125926?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-125926 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Badge for a README or a site
An image that stays current: it is drawn from the data each time it is fetched (a host that proxies images, as GitHub does, may show its copy for a while). Markdown:
[](https://cve.bz/cve/CVE-2026-125926)
HTML:
<a href="https://cve.bz/cve/CVE-2026-125926"><img src="https://cve.bz/cve/badge/CVE-2026-125926.svg" alt="CVE-2026-125926"></a>
Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| AWS mcp-gateway-registry | from 1.0.3 through 1.34.0 |
Attack patterns (CAPEC)
- CAPEC-664 Server Side Request Forgery Likelihood: High · Severity: High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.