CVE-2021-20089

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in purl 2.3.2 allows a malicious user to inject properties into Object.prototype.

CVSS v3.1

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

CVSS v2.0

6.5 MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:P

EPSS

1.61% chance of exploitation in the next 30 days, 74th percentile

Published

2021-04-23

Updated

2024-08-03

Proof-of-concept exploits (1)

• BlackFan/client-side-prototype-pollution/blob/master/pp/purl.md

References

• CVE Record
• NVD entry

Related

• CVE-2021-20083
• CVE-2021-20084
• CVE-2021-20085
• CVE-2021-20086
• CVE-2021-20087
• CVE-2021-20088