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CVE-2026-54498

Viewcomponent View Component cross-site scripting (XSS)

8.7 HIGHPublic exploitEPSS 0.45%
  1. Published17 Jul 2026

Description

view_component is a framework for building reusable, testable, and encapsulated view components in Ruby on Rails. From 4.0.0 until 4.12.0, ViewComponent::Base#around_render can return HTML-unsafe strings that bypass the escaping behavior applied to normal #call return values. This creates an XSS risk when downstream applications use around_render to wrap, replace, instrument, or conditionally return content that includes user-controlled data, and ViewComponent::Collection#render_in can amplify the issue by joining per-item results and marking the entire output html_safe, converting raw unsafe output into an ActiveSupport::SafeBuffer. This issue is fixed in version 4.12.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Affected products

Viewcomponent View Component≥ 4.0.0 < 4.12.0

Remediation

Fixed in
Viewcomponent View Component≥ 4.12.0

References

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Frequently asked

Is CVE-2026-54498 being actively exploited?

CVE-2026-54498 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.45%.

How severe is CVE-2026-54498?

CVE-2026-54498 has a CVSS 3.1 base score of 8.7, rated high. EPSS estimates a 0.45% probability of exploitation.

Which products are affected by CVE-2026-54498?

Affected products include Viewcomponent View Component.

How do I fix CVE-2026-54498?

Upgrade affected software to a fixed version, for example Viewcomponent View Component 4.12.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-54498 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.