High severity7.5NVD Advisory· Published Jan 10, 2024· Updated Jun 17, 2026
CVE-2023-45139
CVE-2023-45139
Description
fontTools is a library for manipulating fonts, written in Python. The subsetting module has a XML External Entity Injection (XXE) vulnerability which allows an attacker to resolve arbitrary entities when a candidate font (OT-SVG fonts), which contains a SVG table, is parsed. This allows attackers to include arbitrary files from the filesystem fontTools is running on or make web requests from the host system. This vulnerability has been patched in version 4.43.0.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
fonttoolsPyPI | >= 4.28.2, < 4.43.0 | 4.43.0 |
Affected products
2- Range: >= 4.28.2, < 4.43.0
Patches
Vulnerability mechanics
References
9- github.com/fonttools/fonttools/commit/9f61271dc1ca82ed91f529b130fe5dc5c9bf1f4cnvdPatchWEB
- github.com/fonttools/fonttools/security/advisories/GHSA-6673-4983-2vx5nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-6673-4983-2vx5ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2023-45139ghsaADVISORY
- www.openwall.com/lists/oss-security/2024/03/08/2nvdWEB
- www.openwall.com/lists/oss-security/2024/03/09/1nvdWEB
- github.com/fonttools/fonttools/releases/tag/4.43.0nvdRelease NotesWEB
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VY63B4SGY4QOQGUXMECRGD6K3YT3GJ75ghsaWEB
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VY63B4SGY4QOQGUXMECRGD6K3YT3GJ75/nvd
News mentions
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