CVE-2021-20083

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-plugin-query-object 2.2.3 allows a malicious...

Basic Information

CVE State: PUBLISHED
Reserved Date: December 17, 2020
Published Date: April 23, 2021
Last Updated: August 03, 2024
Vendor: n/a
Product: jquery-plugin-query-object
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.

CVSS Scores

CVSS v3.1

8.8 - HIGH

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

CVSS v2.0

6.5

Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P

EPSS Score

Score: 2.84% (Percentile: 85.46%) as of 2025-05-12

Exploit Status

Exploited in the Wild: Yes (2022-03-11 08:00:34 UTC) Source

References

https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-query-object.md http://packetstormsecurity.com/files/166299/WordPress-Core-5.9.0-5.9.1-Cross-Site-Scripting.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7CR6VGITIB2TXXZ6B5QRRWPU5S4BXQPD/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IJX6NVXSRN3RX3YUVEJQ4WUTQSDL3DSR/

Known Exploited Vulnerability Information

Source	Added Date
Wordfence	2022-03-11 08:00:34 UTC

Timeline

CVE ID Reserved

December 17, 2020
CVE Published to Public

April 23, 2021
Added to KEVIntel

March 11, 2022