VulnerabilityAnalyzed
CVE-2026-44837
This vulnerability is fixed in 4.9.0.
HIGH 7.5EPSS 0.41%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.41% probability · 35th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-187
- Affected
- viewcomponent/view component
- Source
- security-advisories@github.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.