Filtered by vendor Libexpat Project Subscriptions
Total 39 CVE
CVE Vendors Products Updated CVSS v3.1
CVE-2016-0718 10 Apple, Canonical, Debian and 7 more 16 Mac Os X, Ubuntu Linux, Debian Linux and 13 more 2025-04-12 9.8 Critical
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-2016-5300 4 Canonical, Debian, Google and 1 more 4 Ubuntu Linux, Debian Linux, Android and 1 more 2025-04-12 N/A
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-2012-0876.
CVE-2013-0340 3 Apple, Libexpat Project, Python 7 Ipados, Iphone Os, Macos and 4 more 2025-04-11 N/A
expat 2.1.0 and earlier does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE.
CVE-2012-1147 2 Apple, Libexpat Project 2 Mac Os X, Libexpat 2025-04-11 N/A
readfilemap.c in expat before 2.1.0 allows context-dependent attackers to cause a denial of service (file descriptor consumption) via a large number of crafted XML files.
CVE-2012-1148 3 Apple, Libexpat Project, Redhat 4 Mac Os X, Libexpat, Enterprise Linux and 1 more 2025-04-11 N/A
Memory leak in the poolGrow function in expat/lib/xmlparse.c in expat before 2.1.0 allows context-dependent attackers to cause a denial of service (memory consumption) via a large number of crafted XML files that cause improperly-handled reallocation failures when expanding entities.
CVE-2012-0876 6 Canonical, Debian, Libexpat Project and 3 more 15 Ubuntu Linux, Debian Linux, Libexpat and 12 more 2025-04-11 N/A
The XML parser (xmlparse.c) in expat before 2.1.0 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via an XML file with many identifiers with the same value.
CVE-2009-3560 4 Apache, Libexpat Project, Redhat and 1 more 6 Http Server, Libexpat, Enterprise Linux and 3 more 2025-04-09 N/A
The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with malformed UTF-8 sequences that trigger a buffer over-read, related to the doProlog function in lib/xmlparse.c, a different vulnerability than CVE-2009-2625 and CVE-2009-3720.
CVE-2009-3720 5 A M Kuchling, Apache, Libexpat Project and 2 more 7 Pyxml, Http Server, Libexpat and 4 more 2025-04-09 N/A
The updatePosition function in lib/xmltok_impl.c in libexpat in Expat 2.0.1, as used in Python, PyXML, w3c-libwww, and other software, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with crafted UTF-8 sequences that trigger a buffer over-read, a different vulnerability than CVE-2009-2625.
CVE-2024-28757 4 Fedoraproject, Libexpat Project, Netapp and 1 more 23 Fedora, Libexpat, Active Iq Unified Manager and 20 more 2025-03-28 7.5 High
libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via XML_ExternalEntityParserCreate).
CVE-2024-45490 2 Libexpat Project, Redhat 5 Libexpat, Enterprise Linux, Jboss Core Services and 2 more 2025-03-14 9.8 Critical
An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.
CVE-2024-45492 3 Libexpat, Libexpat Project, Redhat 5 Expat, Libexpat, Enterprise Linux and 2 more 2024-11-21 7.3 High
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 3 Libexpat, Libexpat Project, Redhat 5 Expat, Libexpat, Enterprise Linux and 2 more 2024-11-21 7.3 High
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-2023-52426 1 Libexpat Project 1 Libexpat 2024-11-21 5.5 Medium
libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
CVE-2023-52425 2 Libexpat Project, Redhat 4 Libexpat, Enterprise Linux, Jboss Core Services and 1 more 2024-11-21 7.5 High
libexpat through 2.5.0 allows a denial of service (resource consumption) because many full reparsings are required in the case of a large token for which multiple buffer fills are needed.
CVE-2022-43680 5 Debian, Fedoraproject, Libexpat Project and 2 more 24 Debian Linux, Fedora, Libexpat and 21 more 2024-11-21 7.5 High
In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations.
CVE-2022-40674 4 Debian, Fedoraproject, Libexpat Project and 1 more 9 Debian Linux, Fedora, Libexpat and 6 more 2024-11-21 8.1 High
libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c.
CVE-2022-25313 6 Debian, Fedoraproject, Libexpat Project and 3 more 8 Debian Linux, Fedora, Libexpat and 5 more 2024-11-21 6.5 Medium
In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.
CVE-2019-15903 3 Libexpat Project, Python, Redhat 5 Libexpat, Python, Enterprise Linux and 2 more 2024-11-21 7.5 High
In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.
CVE-2018-20843 8 Canonical, Debian, Fedoraproject and 5 more 12 Ubuntu Linux, Debian Linux, Fedora and 9 more 2024-11-21 7.5 High
In libexpat in Expat before 2.2.7, XML input including XML names that contain a large number of colons could make the XML parser consume a high amount of RAM and CPU resources while processing (enough to be usable for denial-of-service attacks).