Rails has a possible XSS vulnerability in its Action View tag helpers
### Impact 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. ### Releases The fixed releases are available at the normal locations. ### Credit This issue was responsibly reported by Hackerone researcher [taise](https://hackerone.com/taise).
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-33168US | — | — | ||
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 HTM… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/rails/railsPACKAGE
- https://github.com/rails/rails/commit/0b6f8002b52b9c606fd6be9e7915d9f944cf539cWEB
- https://github.com/rails/rails/commit/63f5ad83edaa0b976f82d46988d745426aa4a42dWEB
- https://github.com/rails/rails/commit/c79a07df1e88738df8f68cb0ee759ad6128ca924WEB
- https://github.com/rails/rails/releases/tag/v7.2.3.1WEB
- https://github.com/rails/rails/releases/tag/v8.0.4.1WEB
- https://github.com/rails/rails/releases/tag/v8.1.2.1WEB
- https://github.com/rails/rails/security/advisories/GHSA-v55j-83pf-r9cqWEB
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