CVE-2026-16150CWE-1321CWE-94

RobinHerbots Inputmask Internal Deep Merge Helper extend.js extendAliases prototype pollution

Medium · published July 18, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
37.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X
EPSS
0.00446 · 37.8th percentile
Weaknesses
CWE-1321 · Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'); CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-07-18T19:15Z
EPSS history
Timeline
  • 18 JUL 19:15Z
    RobinHerbots Inputmask Internal Deep Merge Helper extend.js extendAliases prototype pollution
    cvelistv5