« Volver al listado

CVE-2026-33929

Estado: AnalizadaMedia (4.3)—

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Apache PDFBox Examples.

This issue affects the ExtractEmbeddedFiles example in Apache PDFBox: from 2.0.24 through 2.0.36, from 3.0.0 through 3.0.7.

Users are recommended to update to version 2.0.37 or 3.0.8 once available. Until then, they should apply the fix provided in GitHub PR 427.

The ExtractEmbeddedFiles example contained a path traversal vulnerability (CWE-22) mentioned in CVE-2026-23907.

Leer descripción completaMostrar menos

However the change in the releases 2.0.36 and 3.0.7 is flawed because it doesn't consider the file path separator. Because of that, a user having writing rights on /home/ABC could be victim to a malicious PDF resulting in a write attempt to any path starting with /home/ABC, e.g. "/home/ABCDEF".

Users who have copied this example into their production code should apply the mentioned change. The example has been changed accordingly and is available in the project repository.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Apache — Pdfbox

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-33929",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-33929",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-04-14T19:50:04.295675Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@apache.org",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache PDFBox Examples",
          "versions": [
            {
              "status": "affected",
              "version": "2.0.24",
              "versionType": "semver",
              "lessThanOrEqual": "2.0.36"
            },
            {
              "status": "affected",
              "version": "3.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "3.0.7"
            }
          ],
          "packageName": "org.apache.pdfbox:pdfbox-examples",
          "collectionURL": "https://repo.maven.apache.org/maven2",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-04-14T09:16:36.297",
  "references": [
    {
      "url": "https://github.com/apache/pdfbox/pull/427/changes",
      "tags": [
        "Patch"
      ],
      "source": "security@apache.org"
    },
    {
      "url": "https://lists.apache.org/thread/j8l07tgzy9dm8d8n0f3c45h7zg7t3ld6",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ],
      "source": "security@apache.org"
    },
    {
      "url": "https://lists.apache.org/thread/op3lyx1ngzy4qycn06l6hljyf28ff0zs",
      "tags": [
        "Mailing List"
      ],
      "source": "security@apache.org"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@apache.org",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Apache PDFBox Examples.\n\nThis issue affects the \nExtractEmbeddedFiles example in Apache PDFBox: from 2.0.24 through 2.0.36, from 3.0.0 through 3.0.7.\n\n\nUsers are recommended to update to version 2.0.37 or 3.0.8 once \navailable. Until then, they should apply the fix provided in GitHub PR \n427.\n\nThe ExtractEmbeddedFiles example contained a path traversal vulnerability (CWE-22) mentioned in CVE-2026-23907. However the change in the releases 2.0.36 and 3.0.7 is flawed because it doesn't consider the file path separator. Because of that, a user having writing rights on /home/ABC could be victim to a malicious PDF resulting in a write attempt to any path starting with /home/ABC, e.g. \"/home/ABCDEF\".\n\nUsers who have copied this example into their production code should apply the mentioned change. The example \nhas been changed accordingly and is available in the project repository."
    }
  ],
  "lastModified": "2026-06-17T10:38:19.190",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:pdfbox:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6575F889-F1A2-46DB-AE08-1FCD511CA44E",
              "versionEndExcluding": "2.0.37",
              "versionStartIncluding": "2.0.24"
            },
            {
              "criteria": "cpe:2.3:a:apache:pdfbox:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5D05B9D6-455C-48FA-A899-CDC053258BF5",
              "versionEndExcluding": "3.0.8",
              "versionStartIncluding": "3.0.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@apache.org"
}