expat (AlmaLinux:9) — known CVEs & security advisories

Known CVE vulnerabilities and GitHub Security Advisories affecting the AlmaLinux:9 package expat, with affected version ranges, CVSS severity, EPSS exploit prediction, and CISA KEV status.

CVEs (13)

• CVE-2024-45491 — CVSS 9.8 (critical): 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…
• CVE-2024-45492 — CVSS 9.8 (critical): 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…
• CVE-2022-40674 — CVSS 8.1 (high): libexpat before 2.4.9 has a use-after-free in the doContent function in xmlparse.c.
• CVE-2023-52425 — CVSS 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…
• CVE-2024-28757 — CVSS 7.5 (high): libexpat through 2.6.1 allows an XML Entity Expansion attack when there is isolated use of external parsers (created via…
• CVE-2024-45490 — CVSS 7.5 (high): An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.
• CVE-2024-8176 — CVSS 7.5 (high): A stack overflow vulnerability exists in the libexpat library due to the way it handles recursive entity expansion in XML documents. When…
• CVE-2025-59375 — CVSS 7.5 (high): libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for…
• CVE-2022-25314 — CVSS 7.5 (high): In Expat (aka libexpat) before 2.4.5, there is an integer overflow in copyString.
• CVE-2022-43680 — CVSS 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…
• CVE-2022-25313 — CVSS 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-2024-50602 — CVSS 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…
• CVE-2026-45186 — CVSS 2.9 (low): In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized…