How severe is CVE-2026-18245?

CVE-2026-18245 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-18245 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-18245?

CVE-2026-18245 affects Amazon Amplify Codegen Ui. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-18245?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-18245 published?

CVE-2026-18245 was published on 2026-07-30 and last updated on 2026-08-10.

CVE-2026-18245

CVE-2026-18245 is a critical-severity vulnerability in Amazon Amplify Codegen Ui with a CVSS 3.x base score of 9.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.0)
CVSS v4: 6.4
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Amazon Amplify Codegen Ui
Published: 2026-07-30
Last modified: 2026-08-10

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

Frequently asked questions

What is CVE-2026-18245?: 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
How severe is CVE-2026-18245?: CVE-2026-18245 has a CVSS 3.x base score of 9.0, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-18245 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-18245?: CVE-2026-18245 affects Amazon Amplify Codegen Ui. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-18245?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-18245 published?: CVE-2026-18245 was published on 2026-07-30 and last updated on 2026-08-10.

References

Affected products (1)

cpe:2.3:a:amazon:amplify_codegen_ui:*:*:*:*:*:node.js:*:*

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