CVE-2021-20083
CVE-2021-20083 is a high-severity vulnerability in Jquery-plugin-query-object Project Jquery-plugin-query-object with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 6.5
- EPSS exploit prediction: 4% (90th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-1321
- Affected product: Jquery-plugin-query-object Project Jquery-plugin-query-object
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2021-20083?
- 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.
- How severe is CVE-2021-20083?
- CVE-2021-20083 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-20083 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-20083?
- CVE-2021-20083 affects Jquery-plugin-query-object Project Jquery-plugin-query-object. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-20083?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-20083 published?
- CVE-2021-20083 was published on 2021-04-23 and last updated on 2026-06-17.
References
- http://packetstormsecurity.com/files/166299/WordPress-Core-5.9.0-5.9.1-Cross-Site-Scripting.html
- https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/jquery-query-object.md
- 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/
Affected products (1)
- cpe:2.3:a:jquery-plugin-query-object_project:jquery-plugin-query-object:2.2.3:*:*:*:*:*:*:*
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