CVE Explorer
CVE-2026-44546
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 re
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"collectionURL":"https://pypi.org/project/daphne/","defaultStatus":"unaffected","packageName":"daphne","product":"daphne","repo":"https://github.com/django/daphne/","vendor":"djangoproject","versions":[{"lessThanOrEqual":"4.2.1","status":"affected","version":"4.2.0","versionType":"python"},{"status":"unaffected","version":"4.2.2","versionType":"python"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:f073690613c5b0e5ed4773dd3bfb437c97c46b9bcbb82935418800bd4ed7e889 · sha256:f9eff7bab1b789d4… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:f073690613c5b0e5ed4773dd3bfb437c97c46b9bcbb82935418800bd4ed7e889 · sha256:f9eff7bab1b789d4… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-444","description":"CWE-444 (Inconsistent Interpretation of HTTP Requests -- \"HTTP Request/Response Smuggling\")","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:f073690613c5b0e5ed4773dd3bfb437c97c46b9bcbb82935418800bd4ed7e889 · sha256:f9eff7bab1b789d4… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"tags":["release-notes"],"url":"https://github.com/django/daphne/blob/main/CHANGELOG.txt"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f073690613c5b0e5ed4773dd3bfb437c97c46b9bcbb82935418800bd4ed7e889 · sha256:f9eff7bab1b789d4… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.