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CVE-2020-28472

Prototype Pollution

CRITICAL
9.8
CVSS Score
Published: January 19, 2021 at 10:25 AM UTC
Updated: June 17, 2026 at 03:10 AM UTC
2 products affected across 1 vendorAWS Shared Configuration File LoaderAWS SDK for Javascipt

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Severity
CRITICAL9.8
Exploit prediction
EPSS 2%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

AWS SDK for Javascipt· Amazonnpm
95%
v < 2.814.0
Affected range stops below 2.814.0, so it looks safe — our inference, not a vendor statement
AWS Shared Configuration File Loader· Amazonnpm
95%
v < 1.0.0-rc.91.0.0 alpha11.0.0 alpha21.0.0 alpha31.0.0 beta11.0.0 beta21.0.0 beta31.0.0 beta41.0.0 gamma11.0.0 gamma21.0.0 gamma31.0.0 gamma41.0.0 gamma51.0.0 gamma61.0.0 gamma71.0.0 gamma81.0.0 rc11.0.0 rc21.0.0 rc31.0.0 rc8
Affected range stops below 1.0.0-rc.9, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (6)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/aws/aws-sdk-js-v3/commit/a209082dff913939672bb069964b33aa4c5409a9
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/aws/aws-sdk-js/pull/3585/commits/7d72aff2a941173733fcb6741b104cd83d3bc611
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1059426
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1059425
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JS-AWSSDK-1059424
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://snyk.io/vuln/SNYK-JS-AWSSDKSHAREDINIFILELOADER-1049304

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

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