CVE-2021-20089
HIGHCVSS 8.8/10EPSS 1.61%
Last modified
CVE-2021-20089 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in purl 2.3.2 allows a malicious user to inject properties into Object.prototype.. EPSS estimates a 1.61% chance of exploitation in the next 30 days.
Description
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in purl 2.3.2 allows a malicious user to inject properties into Object.prototype.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Purl Project | Purl | 2.3.2 |
References
- https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/purl.mdExploit, Third Party Advisory
- https://github.com/BlackFan/client-side-prototype-pollution/blob/master/pp/purl.mdExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2021-20089?
CVE-2021-20089 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.61% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20089?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2021-20089?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST