low2.3
CVE-2026-33168
Action View provides conventions and helpers for building web pages with the Rails framework.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| rubygems | actionview | >= 8.1.0.beta1, < 8.1.2.1 | 8.1.2.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-v55j-83pf-r9cq
- 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
- https://nvd.nist.gov/vuln/detail/CVE-2026-33168
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionview/CVE-2026-33168.yml