CVE-2026-18245

Critical

Description

Improper control of code generation in Amazon @aws-amplify/codegen-ui-react before 2.20.6 might allow a remote authenticated user to execute arbitrary code in end-user browsers, developer machines, CI/CD environments, and server-side rendering contexts via crafted Studio component or theme schema values due to insufficient coverage and effectiveness of the input validation introduced for CVE-2025-4318. To remediate this issue, users should upgrade to version 2.20.6

SeverityCritical

CVSS9.0

Exploit probability—

ProductAmazon Amplify Codegen Ui

PublishedJul 30, 2026

First seenJul 30, 2026

Weakness typeCWE-94Code injection

How to fix

Update

amazon amplify_codegen_ui2.20.6 or later

Patches

github.com/aws-amplify/amplify-codegen-ui/releases/tag/v2.20.6

Vendor advisories

aws.amazon.com/security/security-bulletins/2026-066-aws/

Affected products

Product	Affected versions	Fixed in
amazon amplify_codegen_ui	v < 2.20.6	2.20.6

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.