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CVE-2026-49286

HIGH
8.1
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-49286
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-05-28 20:07 UTC
Published
2026-06-19 17:03 UTC
Last updated
2026-06-19 17:03 UTC
Primary CWE
CWE-502
CWE-502: Deserialization of Untrusted Data
Vendor / Product
pontedilana / php-weasyprint
Sources
cve.org  ·  NVD

Severity & Metrics

8.1 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products (1)
VendorProductPlatformVersions
pontedilana php-weasyprint — < 2.6.0
Weakness (CWE)
CWESourceDescription
CWE-502 cna CWE-502: Deserialization of Untrusted Data
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.1 HIGH 3.1 cna CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References (4)
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