Jenkins 2.550 and earlier, LTS 2.541.1 and earlier accepts Run Parameter values that refer to builds the user submitting the build does not have access to, allowing attackers with Item/Build and Item/Configure permission to obtain information about the existence of jobs, the existence of builds, and if a specified build exists, its display name.
{
"nvd_published_at": "2026-02-18T15:18:43Z",
"github_reviewed_at": "2026-02-19T20:26:03Z",
"severity": "MODERATE",
"cwe_ids": [
"CWE-200"
],
"github_reviewed": true
}