CVE-2026-49286
CVE-2026-49286 · PhpWeasyPrint vulnerable to PHAR deserialization via output filename (CVE-2023-28115 case-insensitive bypass)
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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.
CVSS 8.1 · Hoch · EPSS 0,7% · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Technologie-Stack: php
Betroffene Produkte und Versionen
php-weasyprint
- Softwareversionen
- < 2.6.0: Betroffen
Keine Korrektur veröffentlicht
pontedilana/php-weasyprint Packagist
- Softwareversionen
- 0.10.0
- 0.10.1
- 0.11.0
- 0.12.0
- 0.13.0
- 0.9.0
- 1.0.0
- 1.0.1
- 1.1.0
- 1.1.1
- 1.2.0
- 1.3.0
- 1.4.0
- 1.5.0
- 2.0.0
- 2.1.0
- 2.2.0
- 2.3.0
- 2.4.0
- 2.5.0
- 2.5.1
- Betroffene Versionsbereiche
- ECOSYSTEM: < 2.6.0
Auf 2.6.0 aktualisieren
Originalquellen
- https://github.com/pontedilana/php-weasyprint/security/advisories/GHSA-2fmj-p74r-3wjm
- https://github.com/KnpLabs/snappy/security/advisories/GHSA-92rv-4j2h-8mjj
- https://github.com/pontedilana/php-weasyprint/commit/d1aa487722b5a3cab9b222b85fdb5608a5a550c3
- https://github.com/pontedilana/php-weasyprint/releases/tag/2.6.0
- https://nvd.nist.gov/vuln/detail/CVE-2026-49286