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.
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Affected Vendors & Products
References
History
Wed, 03 Dec 2025 22:00:00 +0000
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| CPEs | cpe:2.3:a:fonttools:fonttools:*:*:*:*:*:python:*:* |
Mon, 01 Dec 2025 15:30:00 +0000
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| First Time appeared |
Fonttools
Fonttools fonttools |
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| Vendors & Products |
Fonttools
Fonttools fonttools |
Mon, 01 Dec 2025 14:15:00 +0000
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| Metrics |
ssvc
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Sat, 29 Nov 2025 01:15:00 +0000
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| Description | 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. | |
| Title | fontTools is Vulnerable to Arbitrary File Write and XML injection in fontTools.varLib | |
| Weaknesses | CWE-91 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2025-11-29T01:07:12.193Z
Updated: 2025-12-01T14:11:17.657Z
Reserved: 2025-11-21T01:08:02.615Z
Link: CVE-2025-66034
Updated: 2025-12-01T13:56:43.840Z
Status : Analyzed
Published: 2025-11-29T01:16:02.967
Modified: 2025-12-03T21:50:20.027
Link: CVE-2025-66034
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