{"action":"Upgrade tornado to 6.5.5 or later.","affected":[{"fixed":"6.5.5","introduced":"0"}],"component":"tornado","cve_ids":["CVE-2026-31958"],"ecosystem":"PyPI","epss":0.00381,"exploited":false,"fixed_versions":["6.5.5"],"ghsa_id":"GHSA-qjxf-f2mg-c6mc","id":"tcs_01M5KFWBAMRRTFBG51WBC3EV0F","modified_at":"2026-09-10T03:50:40.522968763Z","published_at":"2026-03-12T14:19:52Z","references":["https://osv.dev/vulnerability/GHSA-qjxf-f2mg-c6mc","https://github.com/tornadoweb/tornado/security/advisories/GHSA-qjxf-f2mg-c6mc","https://nvd.nist.gov/vuln/detail/CVE-2026-31958","https://github.com/tornadoweb/tornado/commit/119a195e290c43ad2d63a2cf012c29d43d6ed839","https://github.com/pypa/advisory-database/tree/main/vulns/tornado/PYSEC-2026-140.yaml","https://github.com/tornadoweb/tornado","https://github.com/tornadoweb/tornado/releases/tag/v6.5.5","https://lists.debian.org/debian-lts-announce/2026/04/msg00000.html"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-qjxf-f2mg-c6mc","url":"https://osv.dev/vulnerability/GHSA-qjxf-f2mg-c6mc"}],"summary":"Tornado is vulnerable to DoS due to too many multipart parts"}