{"action":"Upgrade expat to 2.5.0-1+deb12u4 or later.","affected":[{"fixed":"2.5.0-1+deb12u4","introduced":"0"}],"component":"expat","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["2.5.0-1+deb12u4"],"id":"tcs_01M5NR4PKRK9PR803ZQ1XY4015","modified_at":"2026-10-01T03:03:01.143375347Z","published_at":"2026-01-30T07:16:15.570Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-25210","https://security-tracker.debian.org/tracker/CVE-2026-25210"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-25210","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-25210"}],"summary":"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."}