CVE-2019-10805: Sideralis Valib.js

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

valib through 2.0.0 allows Internal Property Tampering. A maliciously crafted JavaScript object can bypass several inspection functions provided by valib. Valib uses a built-in function (hasOwnProperty) from the unsafe user-input to examine an object. It is possible for a crafted payload to overwrite this function to manipulate the inspection results to bypass security checks.

Affected products

• Sideralis Valib.js: up to and including 2.0.0

Published 2020-02-28. Last modified 2026-06-17.