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CVE-2024-23898

Status: ModifiedHigh (8.8)—💥 PoC

Jenkins 2.217 through 2.441 (both inclusive), LTS 2.222.1 through 2.426.2 (both inclusive) does not perform origin validation of requests made through the CLI WebSocket endpoint, resulting in a cross-site WebSocket hijacking (CSWSH) vulnerability, allowing attackers to execute CLI commands on the Jenkins controller.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (1)

Jenkins — Jenkins

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2024-23898",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-23898",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
            },
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              "automatable": "no"
            },
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              "technicalImpact": "total"
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          ],
          "version": "2.0.3",
          "timestamp": "2024-01-26T05:30:39.020683Z"
        }
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    "cvssMetricV31": [
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "exploitabilityScore": 2.8
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      "source": "jenkinsci-cert@googlegroups.com",
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  "published": "2024-01-24T18:15:09.420",
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      "source": "jenkinsci-cert@googlegroups.com"
    },
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      "url": "https://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3315",
      "tags": [
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    },
    {
      "url": "https://www.sonarsource.com/blog/excessive-expansion-uncovering-critical-security-vulnerabilities-in-jenkins/",
      "source": "jenkinsci-cert@googlegroups.com"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-346"
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      "type": "Secondary",
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      "description": [
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  "descriptions": [
    {
      "lang": "en",
      "value": "Jenkins 2.217 through 2.441 (both inclusive), LTS 2.222.1 through 2.426.2 (both inclusive) does not perform origin validation of requests made through the CLI WebSocket endpoint, resulting in a cross-site WebSocket hijacking (CSWSH) vulnerability, allowing attackers to execute CLI commands on the Jenkins controller."
    },
    {
      "lang": "es",
      "value": "Jenkins 2.217 a 2.441 (ambos incluida), LTS 2.222.1 a 2.426.2 (ambos incluida) no realizan la validación del origen de las solicitudes realizadas a través del endpoint CLI WebSocket, lo que genera una vulnerabilidad de secuestro de WebSocket entre sitios (CSWSH), lo que permite a los atacantes para ejecutar comandos CLI en el controlador Jenkins."
    }
  ],
  "lastModified": "2026-06-17T07:13:49.513",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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            },
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              "vulnerable": true,
              "matchCriteriaId": "225EA384-5268-4ACD-A8E1-65002A5D74AB",
              "versionEndIncluding": "2.426.2",
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            }
          ],
          "operator": "OR"
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  ],
  "sourceIdentifier": "jenkinsci-cert@googlegroups.com"
}