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.
{
"cwe_ids": [
"CWE-79"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33168.json",
"cna_assigner": "GitHub_M"
}{
"source": "AFFECTED_FIELD",
"extracted_events": [
{
"introduced": "8.1.0.beta1"
},
{
"fixed": "8.1.2.1"
},
{
"introduced": "8.0.0.beta1"
},
{
"fixed": "8.0.4.1"
},
{
"introduced": "0"
},
{
"fixed": "7.2.3.1"
}
]
}