Remote Code Execution Vulnerability in WeasyPrint by Kozea
CVE-2026-106443

8.8HIGH

Key Information:

Vendor

Kozea

Status
Weasyprint
Vendor
CVE Published:
6 October 2026

What is CVE-2026-106443?

WeasyPrint, a tool for generating PDF documents, contains a vulnerability in its image loading process. In versions before 70.0, the tool allows image bytes from various HTML and CSS sources to be processed without adequate restrictions, exposing systems with Ghostscript installed to remote code execution risks. Specifically, the issue arises when the Pillow EpsImagePlugin executes attacker-controlled PostScript, potentially leading to unauthorized actions within the interpreter due to flawed sandbox protections. This vulnerability has been addressed and resolved in version 70.0.

Affected Version(s)

WeasyPrint < 70.0

References

https://github.com/Kozea/WeasyPrint/security/advisories/G...
x_refsource_CONFIRM
https://github.com/Kozea/WeasyPrint/commit/39cd37ce1610bd...
x_refsource_MISC
https://github.com/Kozea/WeasyPrint/releases/tag/v70.0
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.