{"id":"CVE-2024-45491","title":"An issue was discovered in libexpat before 2.6.3","summary":"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).","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","cvssSource":"adp","ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2024-08-30T13:53:48.624463Z"},"published":"2024-08-30","updated":"2026-10-15","sourceUpdated":"2026-10-15T00:50:06.088Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-45491","references":[{"url":"https://github.com/libexpat/libexpat/pull/891"},{"url":"https://github.com/libexpat/libexpat/issues/888"}],"tags":["cve.org"],"epss":0.0113,"epssPercentile":0.66228,"ingestedAt":"2026-10-15T04:46:37.331Z","slug":"CVE-2024-45491","body":"## Overview\n\nAn 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).\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}