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CVE Vulnerabilities

CVE-2020-7707

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Published: Aug 18, 2020 | Modified: Jun 17, 2026
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
Vulnerability-free packages from our partners
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2020-7707
CWEhttps://cwe.mitre.org/data/definitions/1321.html

The package property-expr before 2.0.3 are vulnerable to Prototype Pollution via the setter function.

Weakness

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.

Affected Software

NameVendorStart VersionEnd Version
Property-exprProperty-expr_project*2.0.3 (excluding)

Potential Mitigations

References

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