CVE-2019-10795: Undefsafe Project Undefsafe

Medium severity, CVSS 6.3. EPSS: 1.1% chance of exploitation in the next 30 days.

undefsafe before 2.0.3 is vulnerable to Prototype Pollution. The 'a' function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.

Affected products

• Undefsafe Project Undefsafe: before 2.0.3 (fixed in 2.0.3)

Published 2020-02-18. Last modified 2026-06-17.