An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. On ChangesList special pages such as Special:RecentChanges and Special:Watchlist, some of the rcfilters-filter-* label messages are output in HTML unescaped, leading to XSS.
{
"unresolved_ranges": [
{
"extracted_events": [
{
"last_affected": "10.0"
}
],
"cpes": [
"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"source": "CPE_STRING"
},
{
"extracted_events": [
{
"last_affected": "33"
},
{
"last_affected": "34"
}
],
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"source": "CPE_STRING"
}
]
}{
"cpe": "cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*",
"source": "CPE_RANGE",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "1.31.12"
},
{
"introduced": "1.32.0"
},
{
"fixed": "1.35.2"
}
]
}