{"id":"JLSEC-2026-1226","details":"In libexpat before 2.8.2, there is a heap-based buffer overflow in doProlog in xmlparse.c because scaffold backing array reallocation is mishandled when there is data-structure sharing across parsers.","modified":"2026-08-09T01:30:04.225813052Z","published":"2026-08-09T01:27:54.135Z","upstream":["CVE-2026-56132"],"database_specific":{"license":"CC-BY-4.0","sources":[{"modified":"2026-06-23T20:15:26.230Z","published":"2026-06-19T06:17:10.253Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-56132","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56132","database_specific":{"status":"Analyzed"},"id":"CVE-2026-56132","imported":"2026-08-09T01:17:11.844Z"}]},"references":[{"type":"WEB","url":"https://github.com/libexpat/libexpat/pull/1272"}],"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-2026-1226.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"}]}