TI-2026-32716 Aliases CVE-2026-44836 GHSA-7f3r-gwc9-2995

view_component: Preview Route Can Dispatch Inherited Helper Methods

MEDIUM 62CWE-749Published 2026-05-26 · Updated 2026-05-27

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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 preview route derives an example name from the URL and calls it with public_send. The code does not verify that the requested method is one of the preview examples explicitly defined by the preview class. As a result, inherited public methods on ViewComponent::Preview are route-reachable. The most important one is render_with_template, which accepts template: and locals:. Those values can come from request params and are later passed to Rails as render template:. If previews are exposed, an attacker can render internal Rails templates that are not otherwise routable. This vulnerability is fixed in 4.9.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00343 28th percentileScored 2026-11-07

Fix Fixed view_component (ViewComponent): 4.9.0view_component (RubyGems): 4.9.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
ViewComponent	view_component	3.0.0 to before 4.9.0	4.9.0	Patch available	CNA
—	view_component (RubyGems)	3.0.0 to before 4.9.0	4.9.0	Patch available	GHSA-7f3r-gwc9-2995

view_component VendorViewComponent Affected 3.0.0 to before 4.9.0 Fixed in 4.9.0 Patch available CNA
view_component (RubyGems) Vendor— Affected 3.0.0 to before 4.9.0 Fixed in 4.9.0 Patch available GHSA-7f3r-gwc9-2995

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:viewcomponent:view_component::::::::	—	—	ViewComponent

cpe:2.3:a:viewcomponent:view_component:*:*:*:*:*:*:*:* Versions — — ·ViewComponent

Remediation

Fix · CNA view_component (ViewComponent) Fixed in 4.9.0
Fix · GHSA-7f3r-gwc9-2995 view_component (RubyGems) Fixed in 4.9.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-44836
2026-10-03 Alias added: GHSA-7f3r-gwc9-2995

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-44836

Other 3

TI-2026-39344 view_component: around_render HTML-Safety Bypass CVSS 3.1HIGH 8.7
TI-2026-32717 view_component: System Test Entry Point Path Check Allows Sibling Directory Escape CVSS 3.1HIGH 7.5
TI-2026-39343 view_component: Reused Component Instances Retain Stale Render Context CVSS 3.1MEDIUM 6.8
TI-2024-14361 view_component Cross-site Scripting vulnerability CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences