Which products and versions are affected by CVE-2026-49286?

Affected: pontedilana/php-weasyprint (composer); php-weasyprint. The full list is in the CVE brief.

Is CVE-2026-49286 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2026-49286 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2026-49286?

Public exploit code is available.

Is there a fix for CVE-2026-49286?

Fixed versions are available, including php-weasyprint 2.6.0, pontedilana/php-weasyprint 2.6.0.

How urgently should CVE-2026-49286 be patched?

Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

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Vulnerability Intelligence

CVE-2026-49286

HighPublic exploit

Prior to version 2.6.0, pontedilana/php-weasyprint guarded the output filename against the phar:// stream wrapper with a case-sensitive blacklist.

Published Jun 19, 2026 · Updated Sep 10, 2026 · Also known as EUVD-2026-38053, GHSA-2fmj-p74r-3wjm

Key Facts

Patch immediately

CVE-2026-49286 is a high-severity vulnerability (CVSS 8.1 v3.1) affecting pontedilana/php-weasyprint (composer), php-weasyprint.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 0.9% probability of exploitation in the next 30 days.
Fixed versions are available, including php-weasyprint 2.6.0, pontedilana/php-weasyprint 2.6.0.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

CVSS v3.1

8.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

0.9%

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2026-49286 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

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.

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
pontedilana/php-weasyprintcomposer	See advisory	2.6.0
php-weasyprint	See advisory	2.6.0

Patched Releases

php-weasyprint

2.6.0

pontedilana/php-weasyprint

2.6.0

Timeline

Publicly disclosed
Jun 19, 2026
Last updated
Sep 10, 2026

Weakness Type

CWE-502 Deserialization of Untrusted Data

References

3 more references in the full CVE brief

FAQ

Common Questions.

PhpWeasyPrint is a PHP library allowing PDF generation from a URL or an HTML page.
Affected: pontedilana/php-weasyprint (composer); php-weasyprint. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including php-weasyprint 2.6.0, pontedilana/php-weasyprint 2.6.0.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

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