Jenkins 2.270 through 2.393 (both inclusive), LTS 2.277.1 through 2.375.3 (both inclusive) does not escape the Jenkins version a plugin depends on when rendering the error message stating its incompatibility with the current version of Jenkins, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to provide plugins to the configured update sites and have this message shown by Jenkins instances.
{
"source": "CPE_FIELD",
"cpe": [
"cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*",
"cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*"
],
"extracted_events": [
{
"introduced": "2.270"
},
{
"fixed": "2.394"
},
{
"introduced": "2.277.1"
},
{
"fixed": "2.375.4"
}
]
}