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

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

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