{"id":"CVE-2026-44546","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-44546","generatedAt":"2026-10-28T04:03:11.350Z","title":"An attacker can exploit this parser differential to inject additional headers into the ASGI scope passed to the application. daphne now rejects requests with these bytes in any header value with a 400 response.","description":"daphne before 4.2.2 reconstructs a raw HTTP request from Twisted's parsed headers and feeds it to autobahn for WebSocket handshake processing. Twisted does not treat \\x0b, \\x0c, \\x1c, \\x1d, \\x1e, or \\x85 as header line separators, but autobahn decodes header values to str and calls splitlines(). An attacker can exploit this parser differential to inject additional headers into the ASGI scope passed to the application. daphne now rejects requests with these bytes in any header value with a 400 response.","published":"2026-06-03T14:16:44.000Z","lastModified":"2026-07-22T19:10:00.000Z","status":"Analyzed","sourceIdentifier":"6a34fbeb-21d4-45e7-8e0a-62b95bc12c92","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"cwe":["CWE-444"],"affected":["djangoproject/daphne"],"epss":{"score":0.00172,"percentile":0.06581,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.17%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/django/daphne/blob/main/CHANGELOG.txt","tags":["Release Notes"],"source":"6a34fbeb-21d4-45e7-8e0a-62b95bc12c92"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-44546","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}