{"id":"JLSEC-2025-63","summary":"An issue was discovered in libexpat before 2.6.3","details":"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`).","modified":"2026-07-25T18:24:13.595582783Z","published":"2025-10-14T15:35:41.198Z","upstream":["CVE-2024-45491"],"database_specific":{"sources":[{"id":"CVE-2024-45491","imported":"2026-07-17T21:04:10.737Z","modified":"2026-06-17T07:54:18.673Z","published":"2024-08-30T03:15:03.850Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2024-45491","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2024-45491","database_specific":{"status":"Modified"}}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html"},{"type":"WEB","url":"https://cert-portal.siemens.com/productcert/html/ssa-613116.html"},{"type":"WEB","url":"https://github.com/libexpat/libexpat/issues/888"},{"type":"WEB","url":"https://github.com/libexpat/libexpat/pull/891"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/09/msg00036.html"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20241018-0003/"}],"affected":[{"package":{"name":"Expat_jll","ecosystem":"Julia","purl":"pkg:julia/Expat_jll?uuid=2e619515-83b5-522b-bb60-26c02a35a201"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.6.4+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-63.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}