CVE-2026-18245

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

State: Published
Severity: 6.4 Medium
Published: Jul 30, 2026
Updated: Jul 30, 2026
Reserved: Jul 29, 2026

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

Scores

CVSS	Score	Vector	Source
4.0	6.4 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H	AMZN
3.1	9.0 Critical	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H	AMZN

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
Amplify Codegen UIAWS	before 2.20.6Affected

References

https://github.com/aws-amplify/amplify-codegen-ui/releases/tag/v2.20.6patch
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-m69jthird-party-advisory

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