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CVE-2025-66034 fontTools is Vulnerable to Arbitrary File Write and XML injection in fontTools.varLib

🗓️ 29 Nov 2025 01:07:12Reported by GoogleType 
osv
 osv🔗 osv.dev👁 25 Views

CVE-2025-66034: fontTools.varLib allows file write and XML injection enabling remote code execution; fixed in 4.60.2.

Related
Refs
ReporterTitlePublishedViews
Family
GithubExploit		Exploit for XML Injection (aka Blind XPath Injection) in Fonttools
21 Mar 202616:36
–githubexploit
GithubExploit		Exploit for XML Injection (aka Blind XPath Injection) in Fonttools
16 Mar 202610:43
–githubexploit
GithubExploit		Exploit for XML Injection (aka Blind XPath Injection) in Fonttools
28 Mar 202608:04
–githubexploit
GithubExploit		Exploit for XML Injection (aka Blind XPath Injection) in Fonttools
17 Mar 202620:03
–githubexploit
GithubExploit		Exploit for XML Injection (aka Blind XPath Injection) in Fonttools
16 Mar 202622:57
–githubexploit
GithubExploit		Exploit for XML Injection (aka Blind XPath Injection) in Fonttools
15 Mar 202614:16
–githubexploit
GithubExploit		Exploit for XML Injection (aka Blind XPath Injection) in Fonttools
7 Apr 202613:43
–githubexploit
GithubExploit		Exploit for XML Injection (aka Blind XPath Injection) in Fonttools
15 Mar 202614:16
–githubexploit
IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite - Visual Inspection Component uses fontTools dependency which is vulnerable to CVE-2025-66034.
17 Mar 202611:59
–ibm
IBM Security Bulletins		Security Bulletin: IBM Maximo Application Suite uses werkzeug-3.1.3,fonttools-4.60.0-cp311-cp311-manylinux2014_x86_64.manylinux_2_17_x86_64.whl,lodash.clonedeep-4.5.0.tgz,js-yaml-4.1.0.tgz,mdast-util-towhich is vulnerable to multiple CVEs
30 Jan 202605:39
–ibm
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10 Apr 2026 05:34Current
8High risk
Vulners AI Score8
CVSS 3.16.3
EPSS0.00085
fontToolsvarLibarbitrary file writeXML injectionremote code executiondesignspace file
25