VulnerabilityModified
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.
HIGH 8.8EPSS 1.61%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.61% probability · 74th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1321
- Affected
- purl project/purl
- Source
- vulnreport@tenable.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.