{"id":"JLSEC-2026-1239","details":"A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when processing XML catalogs that contain repeated \u003cnextCatalog\u003e elements pointing to the same downstream catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application availability, resulting in a denial-of-service condition.","modified":"2026-08-10T02:00:04.272108369Z","published":"2026-08-10T01:45:29.909Z","upstream":["CVE-2026-0992"],"database_specific":{"license":"CC-BY-4.0","sources":[{"html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0992","database_specific":{"status":"Analyzed"},"id":"CVE-2026-0992","imported":"2026-08-09T06:30:35.846Z","modified":"2026-06-30T20:17:25.733Z","published":"2026-01-15T15:15:52.657Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-0992"}]},"references":[{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:7519"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-0992"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2429975"},{"type":"WEB","url":"https://gitlab.gnome.org/GNOME/libxml2/-/issues/1019"}],"affected":[{"package":{"name":"XML2_jll","ecosystem":"Julia","purl":"pkg:julia/XML2_jll?uuid=02c8fc9c-b97f-50b9-bbe4-9be30ff0a78a"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.15.3+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1239.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:N/I:N/A:L"}]}