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

Quick assessment

Affected
RobinHerbots Inputmask
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RobinHerbots Inputmask是RobinHerbots个人开发者开源的一个创建输入掩码的 JavaScript 库。 RobinHerbots Inputmask 5.0.0版本、5.0.1版本、5.0.2版本、5.0.3版本、5.0.4版本、5.0.5版本、5.0.6版本、5.0.7版本、5.0.8版本和5.0.9版本存在安全漏洞，该漏洞源于库lib/dependencyLibs/extend.js中组件Internal Deep Merge Helper的extendDefaults/

CVSS 6.3 · Medium EPSS 0.45% · P39

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 10

VendorProduct Version RangeStatus
RobinHerbots Inputmask 5.0.0 affected
5.0.1 affected
5.0.2 affected
5.0.3 affected
5.0.4 affected
5.0.5 affected
5.0.6 affected
5.0.7 affected
… +2 more rows
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I. Basic Information for CVE-2026-16150

Vulnerability Information
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Vulnerability Title
RobinHerbots Inputmask Internal Deep Merge Helper extend.js extendAliases prototype pollution
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1321
Source: CVE Program / CVE List V5
Vulnerability Title
RobinHerbots Inputmask 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RobinHerbots Inputmask是RobinHerbots个人开发者开源的一个创建输入掩码的 JavaScript 库。 RobinHerbots Inputmask 5.0.0版本、5.0.1版本、5.0.2版本、5.0.3版本、5.0.4版本、5.0.5版本、5.0.6版本、5.0.7版本、5.0.8版本和5.0.9版本存在安全漏洞，该漏洞源于库lib/dependencyLibs/extend.js中组件Internal Deep Merge Helper的extendDefaults/
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
RobinHerbots Inputmask 5.0.0 cpe:2.3:a:robinherbots:inputmask:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-16150

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-16150

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Proof of Concept for CVE-2026-16150 (1)

Other References for CVE-2026-16150 (1)

IV. Related Vulnerabilities

Same weakness: CWE-1321