In Jenkins 2.321 through 2.355 (both inclusive) and LTS 2.332.1 through LTS 2.332.3 (both inclusive) the HTML output generated for new symbol-based SVG icons includes the ‘title’ attribute of ‘l:ionicon’ (until Jenkins 2.334) and ‘alt’ attribute of ‘l:icon’ (since Jenkins 2.335) without further escaping, resulting in a cross-site scripting (XSS) vulnerability.
[
{
"product": "Jenkins",
"vendor": "Jenkins project",
"versions": [
{
"lessThan": "unspecified",
"status": "affected",
"version": "2.321",
"versionType": "custom"
},
{
"lessThanOrEqual": "2.355",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "unspecified",
"status": "affected",
"version": "LTS 2.332.1",
"versionType": "custom"
},
{
"lessThanOrEqual": "LTS 2.332.3",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]