CVE-2026-54498: view_component is a framework for building reusable, testable, and encapsulated view components in Ruby on Rai

This month

HIGH 8.7UPGRADE

CVE-2026-54498 is a high-severity flaw (CVSS 8.7) affecting view component. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.7 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 62%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-07-17
Last modified	2026-10-24

Publisher (CNA): GitHub, Inc. · Vendor: viewcomponent

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-17 21:17 UTCPublished CVE record published
2026-10-24 20:10 UTCUpdated Record last modified

viewcomponent view component UPGRADE

Affected: >= 4.0.0 and < 4.12.0

Fixed in: 4.12.0

Safe to downgrade to: a release before 4.0.0

1. Check installed version

apt-cache policy view-component || rpm -q view-component || view-component --version

2. UPGRADE to 4.12.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade view-component

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade view-component

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 4.0.0 (Debian / Ubuntu)

apt-cache madison view-component sudo apt install view-component=<VERSION_BEFORE_4.0.0> sudo apt-mark hold view-component

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list view-component sudo dnf downgrade view-component-<VERSION_BEFORE_4.0.0> sudo dnf versionlock add view-component

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-54498?

view component: upgrade to 4.12.0. Exact commands for each OS are on this page.

Is CVE-2026-54498 being exploited?

CVE-2026-54498 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-54498 affect?

CVE-2026-54498 affects view component. Severity is high (CVSS 8.7). 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 ap

How urgent is CVE-2026-54498?

Priority 45/100. High severity; Public exploit reference

Software pages

Ruby on Rails vulnerabilities · Ruby vulnerabilities

Related CVEs

CVE-2026-54497 MEDIUM 6.8 UPGRADE view_component is a framework for building reusable, testable, and encapsulated view components in Ruby on Rai

References

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