{"id":"MGASA-2026-0378","summary":"Updated mingw-expat & expat packages fix security vulnerabilities","details":"Expat Denial of Service via storeAtts() Quadratic Complexity.\n(CVE-2026-66046)\nExpat Out-of-Bounds Read via dtdCopy. (CVE-2026-76641)\nIn libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of\ngetentropy's return code leads to insufficient entropy, which results in\nbeing vulnerable to hash flooding attacks, causing a denial of service\nvia crafted XML content. (CVE-2026-76956)\nlibexpat before 2.8.4 lacks handler call depth tracking with custom\nencoding callbacks. Thus, a use-after-free can occur. (CVE-2026-76957)\n","modified":"2026-09-05T04:45:03.218367744Z","published":"2026-09-05T04:35:57Z","upstream":["CVE-2026-66046","CVE-2026-76641","CVE-2026-76956","CVE-2026-76957"],"references":[{"type":"ADVISORY","url":"https://advisories.mageia.org/MGASA-2026-0378.html"},{"type":"REPORT","url":"https://bugs.mageia.org/show_bug.cgi?id=36233"},{"type":"WEB","url":"https://www.openwall.com/lists/oss-security/2026/08/31/13"},{"type":"WEB","url":"https://blog.hartwork.org/posts/expat-2-8-4-released/"},{"type":"WEB","url":"https://github.com/libexpat/libexpat/blob/R_2_8_4/expat/Changes"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/cve-2026-66046"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/cve-2026-76641"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/cve-2026-76956"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/cve-2026-76957"}],"affected":[{"package":{"name":"mingw-expat","ecosystem":"Mageia:10","purl":"pkg:rpm/mageia/mingw-expat?arch=source&distro=mageia-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.4-1.mga10"}]}],"ecosystem_specific":{"section":"core"},"database_specific":{"source":"https://advisories.mageia.org/MGASA-2026-0378.json"}},{"package":{"name":"expat","ecosystem":"Mageia:10","purl":"pkg:rpm/mageia/expat?arch=source&distro=mageia-10"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.4-1.mga10"}]}],"ecosystem_specific":{"section":"core"},"database_specific":{"source":"https://advisories.mageia.org/MGASA-2026-0378.json"}}],"schema_version":"1.9.0","credits":[{"name":"Mageia","contact":["https://wiki.mageia.org/en/Packages_Security_Team"],"type":"COORDINATOR"}]}