{"action":"Upgrade python-engineio to 4.13.2 or later.","affected":[{"fixed":"4.13.2","introduced":"0"}],"component":"python-engineio","cve_ids":["CVE-2026-48809"],"ecosystem":"PyPI","epss":0.00488,"exploited":false,"fixed_versions":["4.13.2"],"ghsa_id":"GHSA-m9gh-vj53-gvh9","id":"tcs_01M5KFQRZ85FMHRHM43WT9YN3C","modified_at":"2026-07-13T16:43:30.815486921Z","published_at":"2026-06-26T20:48:18Z","references":["https://osv.dev/vulnerability/GHSA-m9gh-vj53-gvh9","https://github.com/miguelgrinberg/python-engineio/security/advisories/GHSA-m9gh-vj53-gvh9","https://github.com/miguelgrinberg/python-engineio"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-m9gh-vj53-gvh9","url":"https://osv.dev/vulnerability/GHSA-m9gh-vj53-gvh9"}],"summary":"python-engineio has possible denial of service due to maximum payload size sometimes not being enforced"}