CVE-2026-100307
Missing authorization on the external management API in mcp-gateway-registry enables privilege escalation to registry administrator
Description
Missing authorization in the external management API in Amazon mcp-gateway-registry 1.0.9 through 1.24.7 might allow an authenticated remote user to assign the registry administrator scope to their own identity group and obtain administrative control of every registered gateway asset via a crafted group import request. To remediate this issue, users should upgrade to version 1.25.0.
INFO
Published Date :
Nov. 11, 2026, 8:34 p.m.
Last Modified :
Nov. 11, 2026, 8:34 p.m.
Remotely Exploit :
Yes !
Source :
AMZN
Affected Products
The following products are affected by CVE-2026-100307
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | ff89ba41-3aa1-4d27-914a-91399e9639e5 | ||||
| CVSS 4.0 | HIGH | ff89ba41-3aa1-4d27-914a-91399e9639e5 |
Solution
- Upgrade the mcp-gateway-registry to version 1.25.0.
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CVE-2026-100307 vulnerability anywhere in the article.