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

Quick assessment

Affected
rails actionview
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Rails是美国Rails团队的一套基于Ruby语言的开源Web应用框架。 Rails 8.1.2.1之前版本、8.0.4.1之前版本和7.2.3.1之前版本存在跨站脚本漏洞，该漏洞源于在Action View标签助手中使用空字符串作为HTML属性名称时会绕过属性转义，可能导致浏览器将精心构造的属性值误解为单独的属性名称，造成跨站脚本攻击。

AI Predicted 6.1 Difficulty: Easy EPSS 0.88% · P58
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I. Basic Information for CVE-2026-33168

Vulnerability Information
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Vulnerability Title
Rails has a possible XSS vulnerability in its Action View tag helpers
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Rails 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rails是美国Rails团队的一套基于Ruby语言的开源Web应用框架。 Rails 8.1.2.1之前版本、8.0.4.1之前版本和7.2.3.1之前版本存在跨站脚本漏洞，该漏洞源于在Action View标签助手中使用空字符串作为HTML属性名称时会绕过属性转义，可能导致浏览器将精心构造的属性值误解为单独的属性名称，造成跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
rails actionview >= 8.1.0.beta1, < 8.1.2.1 -

II. Public POCs for CVE-2026-33168

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III. Intelligence Information for CVE-2026-33168

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Patches & Fixes for CVE-2026-33168 (4)

Vendor Advisories for CVE-2026-33168 (1)

Vendor Pages for CVE-2026-33168 (2)

Same Patch Batch · rails · 2026-03-23 · 9 CVEs total

CVE-2026-33195 8.0 HIGH Rails Active Storage has possible Path Traversal in DiskService
CVE-2026-33167 Rails has a possible XSS vulnerability in its Action Pack debug exceptions
CVE-2026-33170 Rails Active Support has a possible XSS vulnerability in SafeBuffer#%
CVE-2026-33176 Rails Active Support has a possible DoS vulnerability in its number helpers
CVE-2026-33173 Rails Active Storage has possible content type bypass via metadata in direct uploads
CVE-2026-33174 Rails Active Storage has a possible DoS vulnerability when in proxy mode via Range request
CVE-2026-33169 Rails Active Support has a possible ReDoS vulnerability in number_to_delimited
CVE-2026-33202 Rails Active Storage has possible glob injection in its DiskService

IV. Related Vulnerabilities

Same product: actionview
Same vendor: rails
Same weakness: CWE-79

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