CVE-2026-54498
ViewComponent around_render bypasses escaping, enabling XSS.
Is CVE-2026-54498 being exploited?
Not confirmed. CVE-2026-54498 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.31% probability of exploitation in the next 30 days.
How severe is CVE-2026-54498?
CVE-2026-54498 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-54498?
Yes. A fix has been recorded for CVE-2026-54498. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-54498 affect?
CVE-2026-54498 affects ViewComponent (Ruby on Rails) < 4.12.0, ViewComponent::Base#around_render, ViewComponent::Collection#render_in. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-54498?
Upgrade to ViewComponent 4.12.0; audit/sanitize around_render usages.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
XSS via around_render and Collection#render_in: attacker-controlled input can execute JS in users' browsers, enabling session theft, defacement, or account takeover.
Patch when possible
- affected>= 4.0.0 and < 4.12.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.