What’s Vulnerable › Vulnerabilities

CVE-2020-28472: Prototype Pollution

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-01-19 · updated 2026-06-17

Description

This affects the package @aws-sdk/shared-ini-file-loader before 1.0.0-rc.9; the package aws-sdk before 2.814.0. If an attacker submits a malicious INI file to an application that parses it with loadSharedConfigFiles , they will pollute the prototype on the application. This can be exploited further depending on the context.

Affected products

• Amazon Aws Sdk For Javascipt: before 2.814.0 — fixed in 2.814.0
• Amazon Aws Shared Configuration File Loader: 1.0.0-alpha1, 1.0.0-alpha2, 1.0.0-alpha3, 1.0.0-beta1, 1.0.0-beta2, 1.0.0-beta3 (+13)

How to fix

Upgrade to a fixed version: Amazon Aws Sdk For Javascipt 2.814.0. Check the vendor advisory for mitigations.

References

• https://github.com/aws/aws-sdk-js-v3/commit/a209082dff913939672bb069964b33aa4c5409a9
• https://github.com/aws/aws-sdk-js/pull/3585/commits/7d72aff2a941173733fcb6741b104cd83d3bc611
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1059426
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1059425
• https://snyk.io/vuln/SNYK-JS-AWSSDK-1059424
• https://snyk.io/vuln/SNYK-JS-AWSSDKSHAREDINIFILELOADER-1049304
• https://github.com/aws/aws-sdk-js-v3/commit/a209082dff913939672bb069964b33aa4c5409a9
• https://github.com/aws/aws-sdk-js/pull/3585/commits/7d72aff2a941173733fcb6741b104cd83d3bc611
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1059426
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1059425
• https://snyk.io/vuln/SNYK-JS-AWSSDK-1059424
• https://snyk.io/vuln/SNYK-JS-AWSSDKSHAREDINIFILELOADER-1049304

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