Log in Start free

Vulnerability · Published Jul 18, 2026 · Assigned by VulDB

CVE-2026-16150RobinHerbots Inputmask Internal Deep Merge Helper extend.js extendAliases prototype pollution

Medium 6.3

In plain English

A medium-severity prototype pollution in Inputmask from RobinHerbots. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 39% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.4%top 61.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

A vulnerability was found in RobinHerbots Inputmask up to 5.0.9. Affected by this issue is the function extendDefaults/extendDefinitions/extendAliases in the library lib/dependencyLibs/extend.js of the component Internal Deep Merge Helper. The manipulation results in improperly controlled modification of object prototype attributes. The attack may be performed from remote. The project was informed of the problem early through an issue report but has not responded yet.

Affected products (as reported)

VendorProductVersions
RobinHerbots Inputmask 5.0.05.0.15.0.25.0.35.0.45.0.55.0.65.0.7

Weakness: CWE-1321, CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R

References