Expat is a C library for parsing XML documents.
Security Fix(es):
* expat: expat: Denial of Service via integer overflow in expat_realloc (CVE-2026-102633)
* expat: expat: Information disclosure via heap buffer over-read in XML_ParseBuffer (CVE-2026-77214)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Expat is a C library for parsing XML documents.
Security Fix(es):
* expat: Expat: Denial of Service via quadratic complexity in attribute processing (CVE-2026-66046)
* expat: Expat: XML Injection via Malformed UTF-16 Input (CVE-2026-93990)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Expat is a C library for parsing XML documents.
Security Fix(es):
* expat: libexpat: Use-after-free vulnerability due to improper handler call depth tracking (CVE-2026-50219)
* expat: libexpat: Arbitrary Code Execution via Heap-based Buffer Overflow (CVE-2026-56132)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Expat is a C library for parsing XML documents.
Security Fix(es):
* libexpat: denial of service via crafted XML input (CVE-2026-45186)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Expat is a C library for parsing XML documents.
Security Fix(es):
* expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing (CVE-2025-59375)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Expat is a C library for parsing XML documents.
Security Fix(es):
* libexpat: expat: Improper Restriction of XML Entity Expansion Depth in libexpat (CVE-2024-8176)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Expat is a C library for parsing XML documents.
Security Fix(es):
* libexpat: expat: DoS via XML_ResumeParser (CVE-2024-50602)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Expat is a C library for parsing XML documents.
Security Fix(es):
* libexpat: Negative Length Parsing Vulnerability in libexpat (CVE-2024-45490)
* libexpat: Integer Overflow or Wraparound (CVE-2024-45491)
* libexpat: integer overflow (CVE-2024-45492)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Expat is a C library for parsing XML documents.
Security Fix(es):
* expat: parsing large tokens can trigger a denial of service (CVE-2023-52425)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Expat is a C library for parsing XML documents.
Security Fix(es):
* expat: use-after free caused by overeager destruction of a shared DTD in
XML_ExternalEntityParserCreate (CVE-2022-43680)
For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE page(s)
listed in the References section.
Expat is a C library for parsing XML documents.
Security Fix(es):
* expat: a use-after-free in the doContent function in xmlparse.c (CVE-2022-40674)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Expat is a C library for parsing XML documents.
Security Fix(es):
* expat: stack exhaustion in doctype parsing (CVE-2022-25313)
* expat: integer overflow in copyString() (CVE-2022-25314)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Expat is a C library for parsing XML documents.
Security Fix(es):
* expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)
* expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution (CVE-2022-25236)
* expat: Integer overflow in storeRawNames() (CVE-2022-25315)
* expat: Large number of prefixed XML attributes on a single tag can crash libexpat (CVE-2021-45960)
* expat: Integer overflow in doProlog in xmlparse.c (CVE-2021-46143)
* expat: Integer overflow in addBinding in xmlparse.c (CVE-2022-22822)
* expat: Integer overflow in build_model in xml