CVE-2026-53436

{
  "id": "CVE-2026-53436",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-10T14:16:36.547",
  "lastModified": "2026-10-26T11:10:00.157",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins when it contains relative path segments (`./` or `../`), allowing attackers to perform phishing attacks."
    },
    {
      "lang": "es",
      "value": "Jenkins 2.567 y anteriores, LTS 2.555.2 y anteriores determina incorrectamente que una URL de redirección después del inicio de sesión apunta legítimamente a Jenkins cuando contiene segmentos de ruta relativa (’./’ o ’.. / ’), permitiendo a los atacantes realizar ataques de phishing."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Jenkins Project",
          "product": "Jenkins",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.568",
              "lessThan": "*",
              "versionType": "maven",
              "status": "unaffected"
            },
            {
              "version": "2.555.3",
              "lessThan": "2.555.*",
              "versionType": "maven",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-10T15:36:38.038604Z",
          "id": "CVE-2026-53436",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*",
              "versionEndExcluding": "2.555.3",
              "matchCriteriaId": "648B5148-FE3B-464A-8963-DCF7ACEF84E5"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*",
              "versionEndExcluding": "2.568",
              "matchCriteriaId": "356A970F-6576-49B6-8EBA-E9770ED190A7"
            }
          ]
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    }
  ],
  "references": [
    {
      "url": "https://www.jenkins.io/security/advisory/2026-06-10/#SECURITY-3711+3755",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}