GHSA-v55j-83pf-r9cq
Rails has a possible XSS vulnerability in its Action View tag helpers
At a glance
- Published
- Updated
- CVE
- CVE-2026-33168
- CVSS_V4
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Description
### 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).
Affected packages
| Package | Versions |
|---|---|
| RubyGems · actionview | introduced 8.1.0.beta1, fixed 8.1.2.1 |
| RubyGems · actionview | introduced 8.0.0.beta1, fixed 8.0.4.1 |
| RubyGems · actionview | introduced 0, fixed 7.2.3.1 |
References
- https://github.com/rails/rails/security/advisories/GHSA-v55j-83pf-r9cq WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-33168 ADVISORY
- https://github.com/rails/rails/commit/0b6f8002b52b9c606fd6be9e7915d9f944cf539c WEB
- https://github.com/rails/rails/commit/63f5ad83edaa0b976f82d46988d745426aa4a42d WEB
- https://github.com/rails/rails/commit/c79a07df1e88738df8f68cb0ee759ad6128ca924 WEB
- https://github.com/rails/rails PACKAGE
- https://github.com/rails/rails/releases/tag/v7.2.3.1 WEB
- https://github.com/rails/rails/releases/tag/v8.0.4.1 WEB
- https://github.com/rails/rails/releases/tag/v8.1.2.1 WEB
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionview/CVE-2026-33168.yml WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |