Jenkins 2.196 and earlier, LTS 2.176.3 and earlier did not escape the reason why a queue items is blcoked in tooltips, resulting in a stored XSS vulnerability exploitable by users able to control parts of the reason a queue item is blocked, such as label expressions not matching any idle executors.
{
"github_reviewed": true,
"nvd_published_at": "2019-09-25T16:15:00Z",
"severity": "MODERATE",
"cwe_ids": [
"CWE-79"
],
"github_reviewed_at": "2022-06-28T16:22:20Z"
}