Libexpat
Source repositories
CVEs (63)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2024-45492 | Cri | 0.64 | 9.8 | 0.01 | Aug 30, 2024 | 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). | ||
| CVE-2024-45491 | Cri | 0.64 | 9.8 | 0.01 | Aug 30, 2024 | 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). | ||
| CVE-2016-0718 | Cri | 0.58 | 9.8 | 0.14 | May 26, 2016 | Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a malformed input document, which triggers a buffer overflow. | ||
| CVE-2016-4472 | Hig | 0.54 | 8.1 | 0.12 | Jun 30, 2016 | The overflow protection in Expat is removed by compilers with certain optimization settings, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via crafted XML data. NOTE: this vulnerability exists because of an incomplete fix… | ||
| CVE-2017-11742 | Hig | 0.51 | 7.8 | 0.00 | Jul 30, 2017 | The writeRandomBytes_RtlGenRandom function in xmlparse.c in libexpat in Expat 2.2.1 and 2.2.2 on Windows allows local users to gain privileges via a Trojan horse ADVAPI32.DLL in the current working directory because of an untrusted search path, aka DLL hijacking. | ||
| CVE-2024-45490 | Hig | 0.49 | 7.5 | 0.02 | Aug 30, 2024 | An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer. | ||
| CVE-2017-9233 | Hig | 0.49 | 7.5 | 0.09 | Jul 25, 2017 | XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD. | ||
| CVE-2016-5300 | Hig | 0.49 | 7.5 | 0.07 | Jun 16, 2016 | The XML parser in Expat does not use sufficient entropy for hash initialization, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted identifiers in an XML document. NOTE: this vulnerability exists because of an incomplete fix for… | ||
| CVE-2026-56411 | Med | 0.45 | 6.9 | 0.00 | Jun 21, 2026 | xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations. | ||
| CVE-2026-56410 | Med | 0.45 | 6.9 | 0.00 | Jun 21, 2026 | xmlwf in libexpat before 2.8.2 has an integer overflow in resolveSystemId. | ||
| CVE-2026-56407 | Med | 0.45 | 6.9 | 0.00 | Jun 21, 2026 | libexpat before 2.8.2 has an integer overflow in doProlog that is related to storeEntityValue and entity textLen. | ||
| CVE-2026-56406 | Med | 0.45 | 6.9 | 0.00 | Jun 21, 2026 | libexpat before 2.8.2 has an integer overflow in XML_ParseBuffer because it lacked a check that was present in XML_Parse. | ||
| CVE-2026-56405 | Med | 0.45 | 6.9 | 0.00 | Jun 21, 2026 | libexpat before 2.8.2 has an integer overflow in getAttributeId. | ||
| CVE-2026-56404 | Med | 0.45 | 6.9 | 0.00 | Jun 21, 2026 | libexpat before 2.8.2 has an integer overflow in addBinding. | ||
| CVE-2026-56403 | Med | 0.45 | 6.9 | 0.00 | Jun 21, 2026 | libexpat before 2.8.2 has an integer overflow in storeAtts. | ||
| CVE-2026-56409 | Med | 0.42 | 6.5 | 0.00 | Jun 21, 2026 | xmlwf in libexpat before 2.8.2 has an integer overflow for the output filename when -d outputDir is used. | ||
| CVE-2025-59375 | Hig | 0.42 | 7.5 | 0.01 | Sep 15, 2025 | libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing. | ||
| CVE-2024-8176 | Hig | 0.42 | 7.5 | 0.02 | Mar 14, 2025 | A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and… | ||
| CVE-2012-6702 | Med | 0.39 | 5.9 | 0.02 | Jun 16, 2016 | Expat, when used in a parser that has not called XML_SetHashSalt or passed it a seed of 0, makes it easier for context-dependent attackers to defeat cryptographic protection mechanisms via vectors involving use of the srand function. | ||
| CVE-2026-56408 | Med | 0.38 | 6.9 | 0.00 | Jun 21, 2026 | libexpat before 2.8.2 has an integer overflow in copyString. |
- risk 0.64cvss 9.8epss 0.01
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).
- risk 0.64cvss 9.8epss 0.01
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).
- risk 0.58cvss 9.8epss 0.14
Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a malformed input document, which triggers a buffer overflow.
- risk 0.54cvss 8.1epss 0.12
The overflow protection in Expat is removed by compilers with certain optimization settings, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via crafted XML data. NOTE: this vulnerability exists because of an incomplete fix…
- risk 0.51cvss 7.8epss 0.00
The writeRandomBytes_RtlGenRandom function in xmlparse.c in libexpat in Expat 2.2.1 and 2.2.2 on Windows allows local users to gain privileges via a Trojan horse ADVAPI32.DLL in the current working directory because of an untrusted search path, aka DLL hijacking.
- risk 0.49cvss 7.5epss 0.02
An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.
- risk 0.49cvss 7.5epss 0.09
XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.
- risk 0.49cvss 7.5epss 0.07
The XML parser in Expat does not use sufficient entropy for hash initialization, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted identifiers in an XML document. NOTE: this vulnerability exists because of an incomplete fix for…
- risk 0.45cvss 6.9epss 0.00
xmlwf in libexpat before 2.8.2 has an integer overflow in endDoctypeDecl via NOTATION declarations.
- risk 0.45cvss 6.9epss 0.00
xmlwf in libexpat before 2.8.2 has an integer overflow in resolveSystemId.
- risk 0.45cvss 6.9epss 0.00
libexpat before 2.8.2 has an integer overflow in doProlog that is related to storeEntityValue and entity textLen.
- risk 0.45cvss 6.9epss 0.00
libexpat before 2.8.2 has an integer overflow in XML_ParseBuffer because it lacked a check that was present in XML_Parse.
- risk 0.45cvss 6.9epss 0.00
libexpat before 2.8.2 has an integer overflow in getAttributeId.
- risk 0.45cvss 6.9epss 0.00
libexpat before 2.8.2 has an integer overflow in addBinding.
- risk 0.45cvss 6.9epss 0.00
libexpat before 2.8.2 has an integer overflow in storeAtts.
- risk 0.42cvss 6.5epss 0.00
xmlwf in libexpat before 2.8.2 has an integer overflow for the output filename when -d outputDir is used.
- risk 0.42cvss 7.5epss 0.01
libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
- risk 0.42cvss 7.5epss 0.02
A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When parsing an XML document with deeply nested entity references, libexpat can be forced to recurse indefinitely, exhausting the stack space and…
- risk 0.39cvss 5.9epss 0.02
Expat, when used in a parser that has not called XML_SetHashSalt or passed it a seed of 0, makes it easier for context-dependent attackers to defeat cryptographic protection mechanisms via vectors involving use of the srand function.
- risk 0.38cvss 6.9epss 0.00
libexpat before 2.8.2 has an integer overflow in copyString.
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