{"action":"Upgrade expat to 2.7.4-r0 or later.","affected":[{"fixed":"2.7.4-r0","introduced":"0"}],"component":"expat","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.21","exploited":false,"fixed_versions":["2.7.4-r0"],"id":"tcs_01M5NFM0T384HCM5QVT0V9S5VH","modified_at":"2026-10-01T02:17:49.215346785Z","published_at":"2026-01-30T07:16:15.570Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2026-25210","https://security.alpinelinux.org/vuln/CVE-2026-25210"],"severity":{"label":"high","score":7.8},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2026-25210#Alpine:v3.21/expat","url":"https://osv.dev/vulnerability/ALPINE-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."}