# CVE-2026-16150 — RobinHerbots Inputmask

> As of 2026-07-18, CVE-2026-16150 is a MEDIUM-severity vulnerability in RobinHerbots Inputmask, CVSS v3.1 6.3, EPSS 0.2% (17.0th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-16150 as of 2026-07-18; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-07-18

## What is CVE-2026-16150?

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 classifies CVE-2026-16150 under weakness classes [CWE-1321](https://intel.threadlinqs.com/cwe/CWE-1321), [CWE-94](https://intel.threadlinqs.com/cwe/CWE-94). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 79 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 6.3 — MEDIUM (`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`)
- **CVSS v4.0 base score:** 5.3 (`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 (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 17.0% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 3.8/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-18

## Is CVE-2026-16150 being exploited?

It currently carries a trending score of 34 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **RobinHerbots**: Inputmask

## How to fix CVE-2026-16150

No vendor patch reference has been recorded for CVE-2026-16150 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-16150

No threat campaign in the Threadlinqs corpus currently references CVE-2026-16150, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, FIRST EPSS, GitHub Security Advisories. Last verified by Threadlinqs on 2026-07-20.

**Technical analysis**

- [vuldb.com — vdb entry](https://vuldb.com/vuln/379909)

**Third-party advisory**

- [vuldb.com — signature](https://vuldb.com/vuln/379909/cti)
- [vuldb.com — third party advisory](https://vuldb.com/cve/CVE-2026-16150)
- [vuldb.com — third party advisory (856979)](https://vuldb.com/submit/856979)

**Issue tracking and product pages**

- [github.com — issue tracking](https://github.com/RobinHerbots/Inputmask/issues/2885)
- [github.com — product](https://github.com/RobinHerbots/Inputmask/)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-16150
Full detection coverage and IOCs for threats exploiting CVE-2026-16150 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp