Libexpat Project: >> Libexpat >> 2.6.1 Security Vulnerabilities
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
CVSS Score
7.5
EPSS Score
0.001
Published
2025-09-15
An issue was discovered in libexpat before 2.6.4. There is a crash within the XML_ResumeParser function because XML_StopParser can stop/suspend an unstarted parser.
CVSS Score
5.9
EPSS Score
0.001
Published
2024-10-27
An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.
CVSS Score
7.5
EPSS Score
0.002
Published
2024-08-30
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).
CVSS Score
9.8
EPSS Score
0.003
Published
2024-08-30
An issue was discovered in libexpat before 2.6.3. nextScaffoldPart in xmlparse.c can have an integer overflow for m_groupSize on 32-bit platforms (where UINT_MAX equals SIZE_MAX).
CVSS Score
9.8
EPSS Score
0.006
Published
2024-08-30
libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).
CVSS Score
7.5
EPSS Score
0.009
Published
2024-03-10