FKIE_CVE-2026-48920

Vulnerability from fkie_nvd - Published: 2026-05-27 15:16 - Updated: 2026-06-17 10:55
Severity
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Jenkins Email Extension Plugin 1933.v45cec755423f and earlier allows inlining images as `base64` in email content by setting the `data-inline` attribute, without restrictions on the image URLs that can be inlined, allowing attackers able to control the email content to specify `file:` URLs for images to read arbitrary files from the Jenkins controller filesystem.
References
jenkinsci-cert@googlegroups.comhttps://www.jenkins.io/security/advisory/2026-05-27/#SECURITY-3705Vendor Advisory
Impacted products
Vendor Product Version
jenkins email_extension *
jenkins email_extension 1933.v45cec755423f
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Jenkins Email Extension Plugin",
          "vendor": "Jenkins Project",
          "versions": [
            {
              "lessThanOrEqual": "1933.v45cec755423f",
              "status": "affected",
              "version": "0",
              "versionType": "maven"
            }
          ]
        }
      ],
      "source": "jenkinsci-cert@googlegroups.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:jenkins:email_extension:*:*:*:*:*:jenkins:*:*",
              "matchCriteriaId": "2FFC7C68-7A2D-4A99-A64D-B80A47A94C2C",
              "versionEndIncluding": "1925.v1598902b_58dd",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:jenkins:email_extension:1933.v45cec755423f:*:*:*:*:jenkins:*:*",
              "matchCriteriaId": "9DC7E152-07EF-4B0B-8615-C57A72300604",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Jenkins Email Extension Plugin 1933.v45cec755423f and earlier allows inlining images as `base64` in email content by setting the `data-inline` attribute, without restrictions on the image URLs that can be inlined, allowing attackers able to control the email content to specify `file:` URLs for images to read arbitrary files from the Jenkins controller filesystem."
    }
  ],
  "id": "CVE-2026-48920",
  "lastModified": "2026-06-17T10:55:23.903",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-48920",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-27T15:43:03.856495Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-27T15:16:31.647",
  "references": [
    {
      "source": "jenkinsci-cert@googlegroups.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.jenkins.io/security/advisory/2026-05-27/#SECURITY-3705"
    }
  ],
  "sourceIdentifier": "jenkinsci-cert@googlegroups.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-73"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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