CVE-2025-66034

fontTools is a library for manipulating fonts, written in Python. In versions from 4.33.0 to before 4.60.2, the fonttools varLib (or python3 -m fontTools.varLib) script has an arbitrary file write vulnerability that leads to remote code execution when a malicious .designspace file is processed. The vulnerability affects the main() code path of fontTools.varLib, used by the fonttools varLib CLI and any code that invokes fontTools.varLib.main(). This issue has been patched in version 4.60.2.
Configurations

No configuration.

History

01 Dec 2025, 14:16

Type Values Removed Values Added
References () https://github.com/fonttools/fonttools/security/advisories/GHSA-768j-98cg-p3fv - () https://github.com/fonttools/fonttools/security/advisories/GHSA-768j-98cg-p3fv -

29 Nov 2025, 01:16

Type Values Removed Values Added
New CVE

Information

Published : 2025-11-29 01:16

Updated : 2025-12-01 15:39


NVD link : CVE-2025-66034

Mitre link : CVE-2025-66034

CVE.ORG link : CVE-2025-66034


JSON object : View

Products Affected

No product.

CWE
CWE-91

XML Injection (aka Blind XPath Injection)