{"id":"DEBIAN-CVE-2026-25210","details":"In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation.","modified":"2026-09-01T16:06:36.001986564Z","published":"2026-01-30T07:16:15.570Z","upstream":["CVE-2026-25210"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-25210"}],"affected":[{"package":{"name":"expat","ecosystem":"Debian:12","purl":"pkg:deb/debian/expat?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.5.0-1","2.5.0-1+deb12u1","2.5.0-1+deb12u2","2.5.0-1+deb12u3","2.5.0-2","2.6.0-1","2.6.1-1","2.6.1-2","2.6.2-1","2.6.2-2","2.6.3-1","2.6.3-2","2.6.4-1","2.7.0-1","2.7.1-1","2.7.1-2","2.7.2-1","2.7.3-1","2.7.3-2","2.7.4-1","2.7.5-1","2.8.0-1","2.8.0-2","2.8.1-1","2.8.2-1","2.8.2-1~deb13u1","2.8.3-1","2.8.3-1~deb13u1","2.8.4-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25210.json"}},{"package":{"name":"expat","ecosystem":"Debian:13","purl":"pkg:deb/debian/expat?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.2-1~deb13u1"}]}],"versions":["2.7.1-2","2.7.2-1","2.7.3-1","2.7.3-2","2.7.4-1","2.7.5-1","2.8.0-1","2.8.0-2","2.8.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25210.json"}},{"package":{"name":"expat","ecosystem":"Debian:14","purl":"pkg:deb/debian/expat?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.4-1"}]}],"versions":["2.7.1-2","2.7.2-1","2.7.3-1","2.7.3-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-25210.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}