# CVE-2026-44837

## Summary

- **CVE ID:** CVE-2026-44837
- **Severity:** MEDIUM
- **CVSS Score:** 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
- **CWE:** CWE-187
- **Published:** May 26, 2026
- **Last Modified:** May 28, 2026

## Description

view_component is a framework for building reusable, testable, and encapsulated view components in Ruby on Rails. From 3.0.0 to 4.9.0, the system test entrypoint canonicalizes a user-controlled file path with File.realpath, then checks whether the resolved path starts with the temp directory path. This is not a safe containment check because sibling directories can share the same string prefix. This vulnerability is fixed in 4.9.0.

## Affected Products

- ViewComponent — view_component (>= 3.0.0, < 4.9.0)

## References

- [CNA](https://github.com/ViewComponent/view_component/security/advisories/GHSA-hg3h-g7xc-f7vp)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.41%
- **EPSS Percentile:** 34.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._