{"id":"JLSEC-2026-1231","details":"libexpat before 2.8.2 has an integer overflow in doProlog that is related to storeEntityValue and entity textLen.","modified":"2026-08-09T01:30:04.231483320Z","published":"2026-08-09T01:27:54.135Z","upstream":["CVE-2026-56407"],"database_specific":{"sources":[{"html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56407","database_specific":{"status":"Analyzed"},"id":"CVE-2026-56407","imported":"2026-08-09T01:17:11.942Z","modified":"2026-06-23T16:28:29.983Z","published":"2026-06-21T16:16:27.987Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-56407"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://github.com/libexpat/libexpat/pull/1262"}],"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":"2.8.2+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1231.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"}]}