# AWS Amplify Studio UI Component Properties Has an Input Validation Issue

Advisory record · `GHSA-hf3j-86p7-mfw8`

- **Identifiers:** `GHSA-hf3j-86p7-mfw8` · `CVE-2025-4318`
- **State:** Confirmed
- **Severity:** CVSS 9.0 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-95](https://cwe.mitre.org/data/definitions/95.html)
- **Tags:** [Code injection](https://agentprime.io/advisories/tag/code-injection.md)
- **Published:** 30 Jul 2026
- **Updated:** 30 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 30 Jul 2026, 20:57 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.0: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `@aws-amplify/codegen-ui-react` (npm): affected `<2.20.3`; fixed in `2.20.3`

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 9.0 Critical, CVSS 4.0: `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`, from CNA (AMZN)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0099, the 63rd percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 30 Jul 2026. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-hf3j-86p7-mfw8](https://github.com/advisories/GHSA-hf3j-86p7-mfw8)
- [OSV: GHSA-hf3j-86p7-mfw8](https://osv.dev/vulnerability/GHSA-hf3j-86p7-mfw8)
- <https://github.com/aws-amplify/amplify-codegen-ui/security/advisories/GHSA-hf3j-86p7-mfw8>
- <https://nvd.nist.gov/vuln/detail/CVE-2025-4318>
- <https://github.com/aws-amplify/amplify-codegen-ui/commit/ca98c38b7c3d69ae7c94d2f62b51e32e8165dae6>
- <https://aws.amazon.com/security/security-bulletins/AWS-2025-010>
- <https://blog.securelayer7.net/cve-2025-4318-aws-amplify-rce>
- <https://github.com/aws-amplify/amplify-codegen-ui>
- <https://github.com/aws-amplify/amplify-codegen-ui/releases/tag/v2.20.3>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-hf3j-86p7-mfw8>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-hf3j-86p7-mfw8/>. Everything for agents: <https://agentprime.io/llms.txt>.