Prototype pollution in pathval - CVE-2020-7751
Published: November 7, 2025
Vulnerability identifier: #VU118197
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-7751
CWE-ID: CWE-1321
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: chaijs
Affected software:
pathval
pathval
Detailed vulnerability description
The vulnerability allows a remote privileged user to execute arbitrary JavaScript code.
The vulnerability exists due to improper input validation. A remote privileged user can pass specially crafted input to the application and perform prototype pollution, which can result in information disclosure or data manipulation.
How to mitigate CVE-2020-7751
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..