CVE-2026-49286

HIGH EPSS 42.1%
Published Jun 19, 20261w ago · Modified Jun 22, 20261w ago
8.1 CVSS 3.1
High
Find Similar
Published Jun 19, 2026 1w ago
Last Modified Jun 22, 2026 1w ago

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.

CVSS Details

Base Score
8.1
Exploitability
2.2
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
42.1% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-502 Deserialization of Untrusted Data Validation

References 4

  • github.com https://github.com/KnpLabs/snappy/security/advisories/GHSA-92rv-4j2h-8mjj
  • github.com https://github.com/pontedilana/php-weasyprint/commit/d1aa487722b5a3cab9b222b85fdb5608a5a550c3
  • github.com https://github.com/pontedilana/php-weasyprint/releases/tag/2.6.0
  • github.com https://github.com/pontedilana/php-weasyprint/security/advisories/GHSA-2fmj-p74r-3wjm

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.