{"action":"Upgrade tornado to 6.5.3 or later.","affected":[{"fixed":"6.5.3","introduced":"0"}],"component":"tornado","cve_ids":["CVE-2025-67724"],"ecosystem":"PyPI","epss":0.0024,"exploited":false,"fixed_versions":["6.5.3"],"ghsa_id":"GHSA-pr2v-jx2c-wg9f","id":"tcs_01M5KFTM6Z9NJQ9W22J01YQ4E2","modified_at":"2026-07-20T19:00:24.953994999Z","published_at":"2026-07-20T18:55:11Z","references":["https://osv.dev/vulnerability/GHSA-pr2v-jx2c-wg9f","https://github.com/tornadoweb/tornado/security/advisories/GHSA-pr2v-jx2c-wg9f","https://nvd.nist.gov/vuln/detail/CVE-2025-67724","https://github.com/tornadoweb/tornado/commit/9c163aebeaad9e6e7d28bac1f33580eb00b0e421","https://github.com/pypa/advisory-database/tree/main/vulns/tornado/PYSEC-2025-265.yaml","https://github.com/tornadoweb/tornado","https://github.com/tornadoweb/tornado/releases/tag/v6.5.3"],"severity":{"label":"medium","score":5.4},"sources":[{"source":"osv","source_id":"GHSA-pr2v-jx2c-wg9f","url":"https://osv.dev/vulnerability/GHSA-pr2v-jx2c-wg9f"}],"summary":"Tornado vulnerable to Header Injection and XSS via reason argument"}