CVE-2020-7765

Public Exploit

Prototype Pollution

Description

This affects the package @firebase/util before 0.3.4. This vulnerability relates to the deepExtend function within the DeepCopy.ts file. Depending on if user input is provided, an attacker can overwrite and pollute the object prototype of a program.

5.6

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.17%

Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory snyk.io

Affected: n/a @firebase/util

References

Link	Tags
https://snyk.io/vuln/SNYK-JS-FIREBASEUTIL-1038324	third party advisory exploit
https://github.com/firebase/firebase-js-sdk/commit/9cf727fcc3d049551b16ae0698ac33dc2fe45ada	third party advisory patch
https://github.com/firebase/firebase-js-sdk/pull/4001	third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2020-7765?: CVE-2020-7765 has been scored as a medium severity vulnerability.
How to fix CVE-2020-7765?: To fix CVE-2020-7765, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-7765 being actively exploited in the wild?: It is possible that CVE-2020-7765 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-7765?: CVE-2020-7765 affects n/a @firebase/util.

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