{"id":"AZL-92382","summary":"CVE-2026-49854 affecting package python-tornado 6.3.3-11","details":"Tornado is a Python web framework and asynchronous networking library. Prior to 6.5.6, the optional native extension tornado.speedups implemented websocket_mask without validating that the mask argument is exactly four bytes, allowing the C function to read up to three bytes beyond the provided buffer when reached through Tornado XSRF token decoding with the native extension active. This issue is fixed in version 6.5.6.","modified":"2026-09-02T05:29:58Z","published":"2026-07-14T21:17:02Z","upstream":["CVE-2026-49854"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49854"}],"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-92382.json"}}],"schema_version":"1.9.0"}