{
  "threat_severity" : "Moderate",
  "public_date" : "2026-02-18T14:17:43Z",
  "bugzilla" : {
    "description" : "org.jenkins-ci.main/jenkins-core: Jenkins: Stored Cross-site Scripting (XSS) via unescaped user-provided offline cause description",
    "id" : "2440638",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2440638"
  },
  "cvss3" : {
    "cvss3_base_score" : "4.6",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N",
    "status" : "verified"
  },
  "cwe" : "CWE-79",
  "details" : [ "Jenkins 2.483 through 2.550 (both inclusive), LTS 2.492.1 through 2.541.1 (both inclusive) does not escape the user-provided description of the \"Mark temporarily offline\" offline cause, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure or Agent/Disconnect permission.", "A flaw was found in Jenkins. This vulnerability, identified as a stored cross-site scripting (XSS) issue, occurs because Jenkins does not properly escape the user-provided description for the \"Mark temporarily offline\" cause. An attacker with Agent/Configure or Agent/Disconnect permissions can exploit this to inject malicious scripts, leading to potential information disclosure or unauthorized actions within the user's browser." ],
  "statement" : "This vulnerability in Jenkins allows authenticated attackers with Agent/Configure or Agent/Disconnect permissions to inject malicious scripts into the \"Mark temporarily offline\" cause description. This stored cross-site scripting (XSS) flaw can lead to information disclosure or unauthorized actions within a user's browser when viewing the affected description. Red Hat OpenShift Developer Tools & Services are affected.",
  "affected_release" : [ {
    "product_name" : "OpenShift Developer Tools and Services 4.12",
    "release_date" : "2026-04-23T00:00:00Z",
    "advisory" : "RHSA-2026:10209",
    "cpe" : "cpe:/a:redhat:ocp_tools:4.12::el8",
    "package" : "ocp-tools-4/jenkins-rhel8:sha256:8b5e1f1b924de7b31a2856c84548a1369b433170205175ce65faa0d61aaae0a7"
  }, {
    "product_name" : "OpenShift Developer Tools and Services 4.13",
    "release_date" : "2026-04-23T00:00:00Z",
    "advisory" : "RHSA-2026:10201",
    "cpe" : "cpe:/a:redhat:ocp_tools:4.13::el8",
    "package" : "ocp-tools-4/jenkins-rhel8:sha256:8b5e1f1b924de7b31a2856c84548a1369b433170205175ce65faa0d61aaae0a7"
  }, {
    "product_name" : "OpenShift Developer Tools and Services 4.14",
    "release_date" : "2026-04-23T00:00:00Z",
    "advisory" : "RHSA-2026:10211",
    "cpe" : "cpe:/a:redhat:ocp_tools:4.14::el8",
    "package" : "ocp-tools-4/jenkins-rhel8:sha256:02c954e1692ff2ce7c85c1505fe48e65b2b21b2f368d514fca86343f4f96cd7c"
  }, {
    "product_name" : "OpenShift Developer Tools and Services 4.15",
    "release_date" : "2026-04-23T00:00:00Z",
    "advisory" : "RHSA-2026:10204",
    "cpe" : "cpe:/a:redhat:ocp_tools:4.15::el8",
    "package" : "ocp-tools-4/jenkins-rhel8:sha256:02c954e1692ff2ce7c85c1505fe48e65b2b21b2f368d514fca86343f4f96cd7c"
  }, {
    "product_name" : "OpenShift Developer Tools and Services 4.16",
    "release_date" : "2026-04-23T00:00:00Z",
    "advisory" : "RHSA-2026:10214",
    "cpe" : "cpe:/a:redhat:ocp_tools:4.16::el9",
    "package" : "ocp-tools-4/jenkins-rhel9:sha256:0a28ecee68681bd1cf50af7dfe9e5c4f54243712b02c3fa9871ee53e42782630"
  }, {
    "product_name" : "OpenShift Developer Tools and Services 4.17",
    "release_date" : "2026-04-23T00:00:00Z",
    "advisory" : "RHSA-2026:10213",
    "cpe" : "cpe:/a:redhat:ocp_tools:4.17::el9",
    "package" : "ocp-tools-4/jenkins-rhel9:sha256:0a28ecee68681bd1cf50af7dfe9e5c4f54243712b02c3fa9871ee53e42782630"
  }, {
    "product_name" : "OpenShift Developer Tools and Services 4.18",
    "release_date" : "2026-04-23T00:00:00Z",
    "advisory" : "RHSA-2026:10215",
    "cpe" : "cpe:/a:redhat:ocp_tools:4.18::el9",
    "package" : "ocp-tools-4/jenkins-rhel9:sha256:0a28ecee68681bd1cf50af7dfe9e5c4f54243712b02c3fa9871ee53e42782630"
  }, {
    "product_name" : "OpenShift Developer Tools and Services 4.19",
    "release_date" : "2026-04-23T00:00:00Z",
    "advisory" : "RHSA-2026:10206",
    "cpe" : "cpe:/a:redhat:ocp_tools:4.19::el9",
    "package" : "ocp-tools-4/jenkins-rhel9:sha256:0a28ecee68681bd1cf50af7dfe9e5c4f54243712b02c3fa9871ee53e42782630"
  }, {
    "product_name" : "OpenShift Developer Tools and Services 4.2",
    "release_date" : "2026-04-23T00:00:00Z",
    "advisory" : "RHSA-2026:10205",
    "cpe" : "cpe:/a:redhat:ocp_tools:4.20::el9",
    "package" : "ocp-tools-4/jenkins-rhel9:sha256:0a28ecee68681bd1cf50af7dfe9e5c4f54243712b02c3fa9871ee53e42782630"
  }, {
    "product_name" : "OpenShift Developer Tools and Services 4.21",
    "release_date" : "2026-04-23T00:00:00Z",
    "advisory" : "RHSA-2026:10199",
    "cpe" : "cpe:/a:redhat:ocp_tools:4.21::el9",
    "package" : "ocp-tools-4/jenkins-rhel9:sha256:0a28ecee68681bd1cf50af7dfe9e5c4f54243712b02c3fa9871ee53e42782630"
  } ],
  "package_state" : [ {
    "product_name" : "OpenShift Developer Tools and Services",
    "fix_state" : "Fix deferred",
    "package_name" : "jenkins",
    "cpe" : "cpe:/a:redhat:ocp_tools"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-27099\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-27099\nhttps://www.jenkins.io/security/advisory/2026-02-18/#SECURITY-3669" ],
  "name" : "CVE-2026-27099",
  "csaw" : false
}