Vulnerability · Published Jul 30, 2026 · Assigned by AMZN

CVE-2026-18245Incomplete fix for CVE-2025-4318 code injection in Amazon @aws-amplify/codegen-ui-react

Critical 9.0

In plain English

A critical-severity code injection in Amplify Codegen UI from AWS. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities).

Severity (CVSS 3.1)9.0Critical

Exploit odds (30 days)1.0%top 37.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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

Affected products (as reported)

Vendor	Product	Versions
AWS	Amplify Codegen UI	0 – before 2.20.6

Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

References

https://github.com/aws-amplify/amplify-codegen-ui/releases/tag/v2.20.6 patch
https://aws.amazon.com/security/security-bulletins/2026-066-aws/ vendor-advisory
https://github.com/aws-amplify/amplify-codegen-ui/security/advisories/GHSA-74xx-rjgf-m69j third-party-advisory