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An issue was discovered in libexpat before 2.6.3. dtdCopy in xmlparse.c can have an integer overflow for nDefaultAtts on 32-bit platforms (where UINT_MAX equals SIZE_MAX).

🗓️ 13 Sep 2024 07:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 7 Views

Libexpat before 2.6.3 has an integer overflow in dtdCopy for nDefaultAtts on 32-bit platforms.

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18 Feb 2026 23:18Current
6.8Medium risk
Vulners AI Score6.8
CVSS 3.17.3 - 9.8
EPSS0.0113
SSVC
7