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CVE-2026-33168

Rails has a possible XSS vulnerability in its Action View tag helpers

Published: Mar 23, 2026Updated: Apr 16, 2026 Sources: CVE List NVD BDUCWE-79
6.5MEDIUM
NVD MITRE
EPSS Score
0.7%
Top 49.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LC:LI:LA:N
Exploitability
AV:NAccess Vector
Network
AC:LAccess Complexity
Low
Impact
C:LConfidentiality
L
I:LIntegrity
L
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

rails
oss-projectaka rails-html-sanitizer, activestorage
actionviewLibrary
OSS Libraries / web-framework
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
Rails Core Team
oss-projectaka rubyonrails, rack? no, rails, actionview
ActionViewLibrary
OSS Libraries / web-framework

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/rails/rails/security/advisories/GHSA-v55j-83pf-r9cq
github.com
https://github.com/rails/rails/commit/0b6f8002b52b9c606fd6be9e7915d9f944cf539c
github.com
https://github.com/rails/rails/commit/63f5ad83edaa0b976f82d46988d745426aa4a42d
github.com
and 13 more references View all →

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