{"action":"Upgrade expat to 2.5.0-1+deb12u5 or later.","affected":[{"fixed":"2.5.0-1+deb12u5","introduced":"0"}],"component":"expat","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["2.5.0-1+deb12u5"],"id":"tcs_01M5NT1AQJ8RX7ZX7ZB4A2CYKT","modified_at":"2026-10-27T09:47:36.659840967Z","published_at":"2026-06-19T06:17:10.253Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-56132","https://security-tracker.debian.org/tracker/CVE-2026-56132"],"severity":{"label":"medium","score":6.9},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-56132","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-56132"}],"summary":"In 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."}