What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-18 · updated 2026-10-24
• Weakness: CWE-94

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

• RobinHerbots Inputmask: 5.0.0, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.0.5 (+4)

References

• https://github.com/RobinHerbots/Inputmask/
• https://github.com/RobinHerbots/Inputmask/issues/2885
• https://vuldb.com/cve/CVE-2026-16150
• https://vuldb.com/submit/856979
• https://vuldb.com/vuln/379909
• https://vuldb.com/vuln/379909/cti
• https://github.com/RobinHerbots/Inputmask/issues/2885

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