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Prototype Pollution in upmerge

Moderate severity GitHub Reviewed Published Jun 6, 2019 to the GitHub Advisory Database • Updated Jan 9, 2023

Package

npm upmerge (npm)

Affected versions

<= 0.1.8

Patched versions

None

Description

All versions of upmerge are vulnerable to Prototype Pollution. The merge() function fails to prevent user input to alter an Object's prototype, allowing attackers to modify override properties of all objects in the application. This may lead to Denial of Service or may be chained with other vulnerabilities leading to Remote Code Execution.

Recommendation

No fix is currently available. Consider using an alternative module until a fix is made available.

References

Reviewed Jun 6, 2019
Published to the GitHub Advisory Database Jun 6, 2019
Last updated Jan 9, 2023

Severity

Moderate

CVE ID

No known CVE

GHSA ID

GHSA-gm9g-2g8v-fvxj

Source code

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