CWE · MITRE source
CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.
Last updated: 09 May 2026 03:25 UTC
NIST 800-53 r5 controls that address this weakness (0)AI
| Control | Title | Family | Why it addresses this CWE |
|---|---|---|---|
| No NIST controls proposed yet. | |||
Top CVEs of this weakness type, ranked by Risk Priority
| CVE | Risk | CVSS | EPSS | Published |
|---|---|---|---|---|
CVE-2019-0230 | 7.6 | 9.8 | 0.9385 | 2020-09-14 |
CVE-2022-24760 | 6.5 | 10.0 | 0.7557 | 2022-03-12 |
CVE-2011-10019 | 6.1 | 9.8 | 0.6931 | 2025-08-13 |
CVE-2019-16328 | 5.9 | 7.5 | 0.7304 | 2019-10-03 |
CVE-2022-1802 | 5.8 | 8.8 | 0.6793 | 2022-12-22 |
CVE-2024-21512 | 5.7 | 8.2 | 0.6834 | 2024-05-29 |
CVE-2021-20086 | 4.7 | 8.8 | 0.4956 | 2021-04-23 |
CVE-2022-0432 | 4.6 | 6.1 | 0.5712 | 2022-02-02 |
CVE-2026-34621 KEV | 4.3 | 8.6 | 0.0990 | 2026-04-11 |
CVE-2022-46175 | 4.2 | 7.1 | 0.4650 | 2022-12-24 |
CVE-2024-56059 | 3.6 | 9.8 | 0.2653 | 2024-12-18 |
CVE-2019-19919 | 3.4 | 9.8 | 0.2475 | 2019-12-20 |
CVE-2022-37601 | 3.2 | 9.8 | 0.2007 | 2022-10-12 |
CVE-2022-39396 | 2.6 | 9.8 | 0.1099 | 2022-11-10 |
CVE-2021-41097 | 2.5 | 9.1 | 0.1172 | 2021-09-27 |
CVE-2023-36475 | 2.5 | 9.8 | 0.0983 | 2023-06-28 |
CVE-2018-19274 | 2.3 | 7.2 | 0.1446 | 2018-11-17 |
CVE-2021-20083 | 2.2 | 8.8 | 0.0729 | 2021-04-23 |
CVE-2022-29823 | 2.2 | 10.0 | 0.0384 | 2022-10-26 |
CVE-2023-26122 | 2.2 | 8.8 | 0.0808 | 2023-04-11 |
CVE-2024-30564 | 2.2 | 9.8 | 0.0384 | 2024-04-18 |
CVE-2020-7704 | 2.1 | 9.8 | 0.0172 | 2020-08-17 |
CVE-2020-7706 | 2.1 | 9.8 | 0.0172 | 2020-08-18 |
CVE-2020-7707 | 2.1 | 9.8 | 0.0209 | 2020-08-18 |
CVE-2020-7719 | 2.1 | 9.8 | 0.0172 | 2020-09-01 |