CVE-2026-44837
Last modified
CVE-2026-44837 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Viewcomponent | View Component | >= 3.0.0, < 4.9.0 |
References
- https://github.com/ViewComponent/view_component/security/advisories/GHSA-hg3h-g7xc-f7vpExploit, Mitigation, Vendor Advisory
- https://github.com/ViewComponent/view_component/security/advisories/GHSA-hg3h-g7xc-f7vpExploit, Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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