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Vulnerability record · CVE-2021-20086 · published 23 April 2021

CVE-2021-20086: Jquery-bbq project jquery-bbq prototype pollution vulnerability

JJquery Bbq Project · Jquery Bbq

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-bbq 1.2.1 allows a malicious user to inject properties into Object.prototype.

8.8 CVSS 3.1 High EPSS 6.1% · top 6.8% CWE-1321 · Prototype pollution
8.8CVSS 3.1 base score, v2 6.5
6.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-bbq 1.2.1 allows a malicious user to inject properties into Object.prototype.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-bbq.md ExploitThird Party Advisory
https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-bbq.md ExploitThird Party Advisory
https://security.netapp.com/advisory/ntap-20241108-0002/

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.6CVE-2026-34621Adobe Acrobat Reader prototype pollution leads to code executionAdobe Acrobat and Reader (versions 24.001.30356, 26.001.21367 and earlier) are affected by prototype pollution (CWE-1321) that can result in arbitrar…KEVEPSS 2.2%analysed

Source: NIST National Vulnerability Database (record CVE-2021-20086), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.