CVE-2025-4318
Input validation issue in AWS Amplify Studio UI component properties
The AWS Amplify Studio UI component property expressions in the aws-amplify/amplify-codegen-ui package lack input validation. This could potentially allow an authenticated user who has access to create or modify components to run arbitrary JavaScript code during the component rendering and build process.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Input validation issue in AWS Amplify Studio UI component properties
The AWS Amplify Studio UI component property expressions in the aws-amplify/amplify-codegen-ui package lack input validation. This could potentially allow an authenticated user who has access to create or modify components to run arbitrary JavaScript code during the component rendering and build process.
- Record
CVE-2025-4318- CVSS 4.0
- 9.0 Critical
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-95
- Updated
- 2026-11-02
EUVDEUVD-2025-13500
The AWS Amplify Studio UI component property expressions in the aws-amplify/amplify-codegen-ui package lack input validation. This could potentially allow an authenticated user who has access to create or modify components to run arbitrary JavaScript code during the component rendering and build process.
- Record
EUVD-2025-13500- CVSS 4.0
- 9.0 Critical
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hf3j-86p7-mfw8
AWS Amplify Studio UI Component Properties Has an Input Validation Issue
Summary
The AWS Amplify Studio amplify-codegen-ui is a package that generates front-end code from UI Builder entities (components, forms, views, and themes) primarily used in AWS Amplify Studio for component previews and in AWS Command Line Interface (AWS CLI) for generating component files in customers' local applications.
An issue exists in the Amplify Studio property binding process of the amplify-codegen-ui package that could potentially allow an authenticated user to run arbitrary JavaScript code during the component rendering and build process.
Impact
When importing a component schema using the create-component command, Amplify Studio will import and generate the component on the users' behalf. The expression-binding function does not validate the component schema properties before converting them to expressions. As a result, an authenticated user who can create or modify components could run arbitrary JavaScript code during the component rendering and build process.
Impacted versions: <=2.20.2
Patches
This issue has been addressed partially in version 2.20.3 and additional fixes in 2.20.4. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.
Workarounds
There are no workarounds. Upgrade to version 2.20.4.
If you have any questions or comments about this advisory, AWS asks that you contact AWS/Amazon Security via the issue-reporting page or directly via email to [email protected]. Please do not create a public GitHub issue.
Credit
AWS would like to thank ray the bounty hunter for collaborating on this issue through the coordinated issue disclosure process.
- Record
GHSA-hf3j-86p7-mfw8- CVSS 4.0
- 9.5 Critical
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-95
- Updated
- 2026-11-02
NVD
The AWS Amplify Studio UI component property expressions in the aws-amplify/amplify-codegen-ui package lack input validation. This could potentially allow an authenticated user who has access to create or modify components to run arbitrary JavaScript code during the component rendering and build process.
- Record
CVE-2025-4318- CVSS 4.0
- 9.0 Critical
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-95
- Updated
- 2026-11-02
OSV
Input validation issue in AWS Amplify Studio UI component properties
The AWS Amplify Studio UI component property expressions in the aws-amplify/amplify-codegen-ui package lack input validation. This could potentially allow an authenticated user who has access to create or modify components to run arbitrary JavaScript code during the component rendering and build process.
- Record
CVE-2025-4318- CVSS 4.0
- 9.0 Critical
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-95
- Updated
- 2026-11-02
OSVGHSA-hf3j-86p7-mfw8
AWS Amplify Studio UI Component Properties Has an Input Validation Issue
Summary
The AWS Amplify Studio amplify-codegen-ui is a package that generates front-end code from UI Builder entities (components, forms, views, and themes) primarily used in AWS Amplify Studio for component previews and in AWS Command Line Interface (AWS CLI) for generating component files in customers' local applications.
An issue exists in the Amplify Studio property binding process of the amplify-codegen-ui package that could potentially allow an authenticated user to run arbitrary JavaScript code during the component rendering and build process.
Impact
When importing a component schema using the create-component command, Amplify Studio will import and generate the component on the users' behalf. The expression-binding function does not validate the component schema properties before converting them to expressions. As a result, an authenticated user who can create or modify components could run arbitrary JavaScript code during the component rendering and build process.
Impacted versions: <=2.20.2
Patches
This issue has been addressed partially in version 2.20.3 and additional fixes in 2.20.4. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes.
Workarounds
There are no workarounds. Upgrade to version 2.20.4.
If you have any questions or comments about this advisory, AWS asks that you contact AWS/Amazon Security via the issue-reporting page or directly via email to [email protected]. Please do not create a public GitHub issue.
Credit
AWS would like to thank ray the bounty hunter for collaborating on this issue through the coordinated issue disclosure process.
- Record
GHSA-hf3j-86p7-mfw8- CVSS 4.0
- 9.5 Critical
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H - Weakness
- CWE-95
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
@aws-amplify/codegen-ui-reactnpm |
through 2.20.2 | 2.20.3 |
@aws-amplify/codegen-ui-reactnpm |
before 2.20.3 | 2.20.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-4318 is a critical vulnerability (CVSS 9.0) in Amazon Amplify Studio, published May 5, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.99%, the 63rd percentile. Fixed in @aws-amplify/codegen-ui-react 2.20.3.
References
aws.amazon.com/security/security-bulletins/AWS-2025-010
github.com/aws-amplify/amplify-codegen-ui/releases/tag/v2.20.3
blog.securelayer7.net/cve-2025-4318-aws-amplify-rce
nvd.nist.gov/vuln/detail/CVE-2025-4318