Total
49 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2012-1147 | 2 Apple, Libexpat Project | 2 Mac Os X, Libexpat | 2026-04-29 | 4.3 MEDIUM | 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-2009-3720 | 4 A M Kuchling, Apache, Libexpat Project and 1 more | 4 Pyxml, Http Server, Libexpat and 1 more | 2026-04-23 | 5.0 MEDIUM | 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-2009-3560 | 3 Apache, Libexpat Project, Xmltwig | 3 Http Server, Libexpat, Xml-twig For Perl | 2026-04-23 | 5.0 MEDIUM | 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-2026-32778 | 1 Libexpat Project | 1 Libexpat | 2026-03-17 | N/A | 2.9 LOW |
| libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier ouf-of-memory condition. | |||||
| CVE-2026-32777 | 1 Libexpat Project | 1 Libexpat | 2026-03-17 | N/A | 4.0 MEDIUM |
| libexpat before 2.7.5 allows an infinite loop while parsing DTD content. | |||||
| CVE-2026-32776 | 1 Libexpat Project | 1 Libexpat | 2026-03-17 | N/A | 4.0 MEDIUM |
| libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content. | |||||
| CVE-2024-28757 | 3 Fedoraproject, Libexpat Project, Netapp | 21 Fedora, Libexpat, Active Iq Unified Manager and 18 more | 2025-11-04 | N/A | 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-2023-52426 | 1 Libexpat Project | 1 Libexpat | 2025-11-04 | N/A | 5.5 MEDIUM |
| libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time. | |||||
| CVE-2023-52425 | 1 Libexpat Project | 1 Libexpat | 2025-11-04 | N/A | 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-2024-50602 | 3 Debian, Libexpat Project, Netapp | 17 Debian Linux, Libexpat, Active Iq Unified Manager and 14 more | 2025-10-15 | N/A | 5.9 MEDIUM |
| 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. | |||||
| CVE-2022-43680 | 4 Debian, Fedoraproject, Libexpat Project and 1 more | 18 Debian Linux, Fedora, Libexpat and 15 more | 2025-05-30 | N/A | 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 | 3 Debian, Fedoraproject, Libexpat Project | 3 Debian Linux, Fedora, Libexpat | 2025-05-30 | N/A | 8.1 HIGH |
| libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c. | |||||
| CVE-2022-25313 | 5 Debian, Fedoraproject, Libexpat Project and 2 more | 6 Debian Linux, Fedora, Libexpat and 3 more | 2025-05-30 | 4.3 MEDIUM | 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 | 2 Libexpat Project, Python | 2 Libexpat, Python | 2025-05-30 | 5.0 MEDIUM | 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 | 7 Canonical, Debian, Fedoraproject and 4 more | 9 Ubuntu Linux, Debian Linux, Fedora and 6 more | 2025-05-30 | 7.8 HIGH | 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). | |||||
| CVE-2022-25315 | 5 Debian, Fedoraproject, Libexpat Project and 2 more | 6 Debian Linux, Fedora, Libexpat and 3 more | 2025-05-05 | 7.5 HIGH | 9.8 CRITICAL |
| In Expat (aka libexpat) before 2.4.5, there is an integer overflow in storeRawNames. | |||||
| CVE-2022-25314 | 5 Debian, Fedoraproject, Libexpat Project and 2 more | 6 Debian Linux, Fedora, Libexpat and 3 more | 2025-05-05 | 5.0 MEDIUM | 7.5 HIGH |
| In Expat (aka libexpat) before 2.4.5, there is an integer overflow in copyString. | |||||
| CVE-2022-25236 | 4 Debian, Libexpat Project, Oracle and 1 more | 5 Debian Linux, Libexpat, Http Server and 2 more | 2025-05-05 | 7.5 HIGH | 9.8 CRITICAL |
| xmlparse.c in Expat (aka libexpat) before 2.4.5 allows attackers to insert namespace-separator characters into namespace URIs. | |||||
| CVE-2022-25235 | 5 Debian, Fedoraproject, Libexpat Project and 2 more | 6 Debian Linux, Fedora, Libexpat and 3 more | 2025-05-05 | 7.5 HIGH | 9.8 CRITICAL |
| xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding, such as checks for whether a UTF-8 character is valid in a certain context. | |||||
| CVE-2022-23990 | 6 Debian, Fedoraproject, Libexpat Project and 3 more | 6 Debian Linux, Fedora, Libexpat and 3 more | 2025-05-05 | 5.0 MEDIUM | 7.5 HIGH |
| Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function. | |||||