CVE-2021-20083
CVSS v3
8.8
HIGH
EPSS Score
4.2 %
exploit probability, as of 2026-10-19
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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Affected and fixed versions
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- jquery-query-objectnpmall versions · no fixed version listed
Vendor advisories
- CVE-2021-20083 Red Hat Product Security
wordpress: WordPress Core 5.9.0 / 5.9.1 Cross Site Scripting
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.
Technical details
- Published
- 2021-04-23
Frequently asked questions
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