CVE-2021-20083

HIGH

jquery-plugin-query-object 2.2.3 - Prototype Pollution

Title source: llm

Description

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-plugin-query-object 2.2.3 allows a malicious user to inject properties into Object.prototype.

References (4)

Core 4

Core References

Exploit, Third Party Advisory x_refsource_misc

https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-query-object.md

View Exploit ZIP pw:eip

Third Party Advisory, VDB Entry x_refsource_misc

http://packetstormsecurity.com/files/166299/WordPress-Core-5.9.0-5.9.1-Cross-Site-Scripting.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7CR6VGITIB2TXXZ6B5QRRWPU5S4BXQPD/

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IJX6NVXSRN3RX3YUVEJQ4WUTQSDL3DSR/

Scores

CVSS v3 8.8

EPSS 0.0419

EPSS Percentile 89.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE

CWE-1321

Status published

Products (2)

jquery-plugin-query-object_project/jquery-plugin-query-object 2.2.3

npm/jquery-query-object 0npm

Published Apr 23, 2021

Tracked Since Feb 18, 2026