{"id":"AZL-111736","summary":"CVE-2026-116578 affecting package python-tornado 6.3.3-11","details":"Tornado is a Python web framework and asynchronous networking library. Prior to 6.6, tornado.web.RedirectHandler URL templates can place regex-capture substitutions where crafted request paths change the redirect scheme or network location. Affected placements include substitutions at the start of a path, directly after a fixed host, or at the beginning of the template, including protocol-relative, absolute, backslash, encoded, host-extension, and user-info variants interpreted by browsers as attacker-controlled destinations. Static templates and substitutions after a fixed host followed by a slash are not affected. An attacker can use the resulting open redirect on the application's domain for phishing. This issue is fixed in version 6.6.","modified":"2026-11-11T05:28:00Z","published":"2026-10-26T21:18:14Z","upstream":["CVE-2026-116578"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116578"}],"affected":[{"package":{"name":"python-tornado","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/python-tornado"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.3.3-11"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-111736.json"}}],"schema_version":"1.9.2"}