Vulnerability in Ruby on Rails (July 16, 2026)

unknown

A vulnerability has been discovered in Ruby on Rails. It allows an attacker to cause a remote indirect code injection (XSS).

CSIRTS triage

What: A vulnerability allows an attacker to cause a remote indirect code injection (XSS).
Who is affected: Users of Ruby on Rails are affected.
Urgency: Remediation is unknown urgency due to lack of specific details.
Action: Monitor for updates and apply patches when available.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-FR Avis de sécurité (FR · national-cert · site)
Severity: unknown
Published: 2026-07-16
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0891/

Recent advisories for Ruby on Rails

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

high[NEW] [high] Ruby on Rails: Vulnerability allows information disclosurecert-bund · 2026-07-31
unknownVulnerability in Ruby on Rails activestorage (July 30, 2026)cert-fr-avis · 2026-07-30
high[UPDATE] [high] Ruby and Ruby on Rails (erb gem): Vulnerability allows code executioncert-bund · 2026-07-20
criticalCVE-2026-55518: Avo is a framework to create admin panels for Ruby on Rails apps. Prior to 3.32.1 and 4.0.0.be…nvd · 2026-07-17
highCVE-2026-54498: view_component is a framework for building reusable, testable, and encapsulated view component…nvd · 2026-07-17
mediumCVE-2026-54497: view_component is a framework for building reusable, testable, and encapsulated view component…nvd · 2026-07-17

Vulnerability in Ruby on Rails (July 16, 2026)

CSIRTS triage

Details

Recent advisories for Ruby on Rails

More from CERT-FR Avis de sécurité