CVE-2026-33168

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.

The following products are affected by CVE-2026-33168 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33168.

URL	Resource
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
https://github.com/rails/rails/security/advisories/GHSA-v55j-83pf-r9cq
https://nvd.nist.gov/vuln/detail/CVE-2026-33168
https://www.cve.org/CVERecord?id=CVE-2026-33168