FKIE_CVE-2026-49286

Vulnerability from fkie_nvd - Published: 2026-06-19 18:16 - Updated: 2026-06-22 18:20
Severity
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
PhpWeasyPrint is a PHP library allowing PDF generation from a URL or an HTML page. Prior to version 2.6.0, `pontedilana/php-weasyprint` guarded the output filename against the `phar://` stream wrapper with a case-sensitive blacklist. PHP stream wrappers are case-insensitive, so `PHAR://`, `Phar://`, etc. bypass the check and reach `fileExists()` (`file_exists()`) in `prepareOutput()`. On PHP 7 (which the library still supports — PHP 7.4+), this triggers deserialization of a crafted PHAR archive's metadata, leading to remote code execution. This is the patch-bypass of CVE-2023-28115. The same issue and fix were handled upstream in KnpLabs/snappy (GHSA-92rv-4j2h-8mjj). PhpWeasyPrint version 2.6.0 contains a patch for the issue.
References
security-advisories@github.comhttps://github.com/KnpLabs/snappy/security/advisories/GHSA-92rv-4j2h-8mjj
security-advisories@github.comhttps://github.com/pontedilana/php-weasyprint/commit/d1aa487722b5a3cab9b222b85fdb5608a5a550c3
security-advisories@github.comhttps://github.com/pontedilana/php-weasyprint/releases/tag/2.6.0
security-advisories@github.comhttps://github.com/pontedilana/php-weasyprint/security/advisories/GHSA-2fmj-p74r-3wjm
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/pontedilana/php-weasyprint/security/advisories/GHSA-2fmj-p74r-3wjm
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "php-weasyprint",
          "vendor": "pontedilana",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.6.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "PhpWeasyPrint is a PHP library allowing PDF generation from a URL or an HTML page. Prior to version 2.6.0, `pontedilana/php-weasyprint` guarded the output filename against the `phar://` stream wrapper with a case-sensitive blacklist. PHP stream wrappers are case-insensitive, so `PHAR://`, `Phar://`, etc. bypass the check and reach `fileExists()` (`file_exists()`) in `prepareOutput()`. On PHP 7 (which the library still supports \u2014 PHP 7.4+), this triggers deserialization of a crafted PHAR archive\u0027s metadata, leading to remote code execution. This is the patch-bypass of CVE-2023-28115. The same issue and fix were handled upstream in KnpLabs/snappy (GHSA-92rv-4j2h-8mjj). PhpWeasyPrint version 2.6.0 contains a patch for the issue."
    }
  ],
  "id": "CVE-2026-49286",
  "lastModified": "2026-06-22T18:20:40.350",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-49286",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-22T14:22:36.863995Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-19T18:16:19.487",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/KnpLabs/snappy/security/advisories/GHSA-92rv-4j2h-8mjj"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/pontedilana/php-weasyprint/commit/d1aa487722b5a3cab9b222b85fdb5608a5a550c3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/pontedilana/php-weasyprint/releases/tag/2.6.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/pontedilana/php-weasyprint/security/advisories/GHSA-2fmj-p74r-3wjm"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/pontedilana/php-weasyprint/security/advisories/GHSA-2fmj-p74r-3wjm"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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