CVE-2021-23413

MEDIUM

jszip < 3.7.0 - Prototype Pollution via Filename Manipulation

Title source: llm
STIX 2.1

Description

This affects the package jszip before 3.7.0. Crafting a new zip file with filenames set to Object prototype values (e.g __proto__, toString, etc) results in a returned object with a modified prototype instance.

References (6)

Core 6
Core References
Exploit, Patch, Third Party Advisory x_refsource_misc
https://snyk.io/vuln/SNYK-JS-JSZIP-1251497
Exploit, Patch, Third Party Advisory x_refsource_misc
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1251498
Exploit, Patch, Third Party Advisory x_refsource_misc
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1251499
Third Party Advisory x_refsource_misc
https://github.com/Stuk/jszip/pull/766

Scores

CVSS v3 5.3
EPSS 0.0331
EPSS Percentile 87.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Details

Status published
Products (2)
jszip_project/jszip < 3.7.0
npm/jszip 3.0.0 - 3.7.0npm
Published Jul 25, 2021
Tracked Since Feb 18, 2026