CVE-2026-33168Rails has a possible XSS vulnerability in its Action View tag helpers

Descripción

Action View provides conventions and helpers for building web pages with the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, when a blank string is used as an HTML attribute name in Action View tag helpers, the attribute escaping is bypassed, producing malformed HTML. A carefully crafted attribute value could then be misinterpreted by the browser as a separate attribute name, possibly leading to XSS. Applications that allow users to specify custom HTML attributes are affected. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/rails/rails/security/advisories/GHSA-v55j-83pf-r9cq
• https://github.com/rails/rails/commit/0b6f8002b52b9c606fd6be9e7915d9f944cf539c
• https://github.com/rails/rails/commit/63f5ad83edaa0b976f82d46988d745426aa4a42d
• https://github.com/rails/rails/commit/c79a07df1e88738df8f68cb0ee759ad6128ca924
• https://github.com/rails/rails/releases/tag/v7.2.3.1
• https://github.com/rails/rails/releases/tag/v8.0.4.1
• https://github.com/rails/rails/releases/tag/v8.1.2.1