{"action":"Upgrade tornado to 6.5.6 or later.","affected":[{"fixed":"6.5.6","introduced":"0"}],"component":"tornado","cve_ids":["CVE-2026-49854"],"ecosystem":"PyPI","epss":0.00419,"exploited":false,"fixed_versions":["6.5.6"],"ghsa_id":"GHSA-cx3h-4qpv-8hc9","id":"tcs_01M5KFE095TSZ3PYWERR75GNHC","modified_at":"2026-09-10T03:50:49.232529305Z","published_at":"2026-06-12T18:30:19Z","references":["https://osv.dev/vulnerability/GHSA-cx3h-4qpv-8hc9","https://github.com/tornadoweb/tornado/security/advisories/GHSA-cx3h-4qpv-8hc9","https://github.com/tornadoweb/tornado","https://github.com/tornadoweb/tornado/releases/tag/v6.5.6"],"severity":{"label":"low","score":3.7},"sources":[{"source":"osv","source_id":"GHSA-cx3h-4qpv-8hc9","url":"https://osv.dev/vulnerability/GHSA-cx3h-4qpv-8hc9"}],"summary":"Tornado has out-of-bounds memory access via C extension"}