{"schema_version":"1.7.2","id":"OESA-2026-2770","modified":"2026-08-06T11:11:41Z","published":"2026-06-24T11:11:41Z","upstream":["CVE-2026-56131","CVE-2026-56132"],"summary":"expat security update","details":"expat is a stream-oriented XML parser library written in C. expat excels with files too large to fit RAM, and where performance and flexibility are crucial.\r\n\r\nSecurity Fix(es):\n\nlibexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).(CVE-2026-56131)\n\nIn 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.(CVE-2026-56132)","affected":[{"package":{"ecosystem":"openEuler:24.03-LTS-SP3","name":"expat","purl":"pkg:rpm/openEuler/expat&distro=openEuler-24.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0-21.oe2403sp3"}]}],"ecosystem_specific":{"aarch64":["expat-2.5.0-21.oe2403sp3.aarch64.rpm","expat-debuginfo-2.5.0-21.oe2403sp3.aarch64.rpm","expat-debugsource-2.5.0-21.oe2403sp3.aarch64.rpm","expat-devel-2.5.0-21.oe2403sp3.aarch64.rpm"],"noarch":["expat-help-2.5.0-21.oe2403sp3.noarch.rpm"],"src":["expat-2.5.0-21.oe2403sp3.src.rpm"],"x86_64":["expat-2.5.0-21.oe2403sp3.x86_64.rpm","expat-debuginfo-2.5.0-21.oe2403sp3.x86_64.rpm","expat-debugsource-2.5.0-21.oe2403sp3.x86_64.rpm","expat-devel-2.5.0-21.oe2403sp3.x86_64.rpm"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2770"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56131"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56132"}],"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L"}],"database_specific":{"severity":"Medium"}}