{"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_01M5KH3183PWWEWGWQRBRWTP03","modified_at":"2026-07-13T16:33:12.439748615Z","published_at":"2026-07-13T15:46:24.660424Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3033","https://github.com/miguelgrinberg/python-engineio/security/advisories/GHSA-m9gh-vj53-gvh9","https://github.com/miguelgrinberg/python-engineio","https://pypi.org/project/python-engineio","https://github.com/advisories/GHSA-m9gh-vj53-gvh9","https://nvd.nist.gov/vuln/detail/CVE-2026-48809"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-3033","url":"https://osv.dev/vulnerability/PYSEC-2026-3033"}],"summary":"python-engineio has possible denial of service due to maximum payload size sometimes not being enforced"}