sanic chunked trailer request smuggling allows hidden second request execution

DescriptionSanic's HTTP/1.1 chunked-body handling does not fully consume the trailer-part after the terminating 0\r\n chunk. Because of that, attacker-controlled bytes left in the connection buffer after the first chunked request can be interpreted as the start of a new HTTP request on the same...

HTTP Response Splitting

Overview Affected versions of this package are vulnerable to HTTP Response Splitting via the HTTP/1.1 request parsing logic in sanic/http/http1.py, where malformed or conflicting transfer-encoding and content-length headers allow an attacker to inject a smuggled request into the processing...

CVE-2026-85078

creationtimestamp| type| source ---|---|--- 2026-09-17 15:31:49+00:00| seen| https://gist.github.com/alon710/0ec5568a7a1b950531d7e3c938789029 2026-09-17 16:28:20+00:00| seen| https://bsky.app/profile/cve.skyfleet.blue/post/6p7udq5snpnfu 2026-09-17 16:35:02+00:00| published-proof-of-concept|...

CVE-2026-85078

Sanic is an opensource python web server/framework. In version 25.12.0, Sanic's core HTTP/1.1 chunked-body handling does not fully consume the trailer-part after the terminating zero chunk before reusing the keep-alive connection buffer. A remote unauthenticated client can place attacker-controll...

CVE-2026-85077

Sanic is an opensource python web server/framework. Prior to version 24.12.1, and in version 25.12.0, the HTTP/1.1 response pipeline in sanic/response/types.py serializes response header names and values without rejecting carriage-return or line-feed characters. Applications that place...

CVE-2026-85078

A flaw was found in Sanic, an open-source Python web server/framework. A remote, unauthenticated attacker can exploit incomplete handling of HTTP/1.1 chunked-body requests. By injecting malicious data into the request's trailer section, the attacker can cause Sanic to process a hidden second...

CVE-2026-85077

A flaw was found in Sanic. The HTTP/1.1 response pipeline does not properly validate carriage-return or line-feed characters in response header names and values. This allows applications that place attacker-controlled data in response headers, filenames, or cookie attributes to inject additional...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling in the HTTP/1.1 request parsing process. An attacker can cause the server to interpret leftover bytes in the connection buffer as a new, unintended HTTP request by sending specially crafted chunked requests with...

GHSA-WMJ6-G64G-J7Q5 sanic chunked trailer request smuggling allows hidden second request execution

Description Sanic's HTTP/1.1 chunked-body handling does not fully consume the trailer-part after the terminating 0\r\n chunk. Because of that, attacker-controlled bytes left in the connection buffer after the first chunked request can be interpreted as the start of a new HTTP request on the same...

sanic chunked trailer request smuggling allows hidden second request execution

Description Sanic's HTTP/1.1 chunked-body handling does not fully consume the trailer-part after the terminating 0\r\n chunk. Because of that, attacker-controlled bytes left in the connection buffer after the first chunked request can be interpreted as the start of a new HTTP request on the same...

CVE-2026-85078 sanic chunked trailer request smuggling allows hidden second request execution

Sanic is an opensource python web server/framework. In version 25.12.0, Sanic's core HTTP/1.1 chunked-body handling does not fully consume the trailer-part after the terminating zero chunk before reusing the keep-alive connection buffer. A remote unauthenticated client can place attacker-controll...

EUVD-2026-81577

Sanic is an opensource python web server/framework. In version 25.12.0, Sanic's core HTTP/1.1 chunked-body handling does not fully consume the trailer-part after the terminating zero chunk before reusing the keep-alive connection buffer. A remote unauthenticated client can place attacker-controll...

CVE-2026-85078 sanic chunked trailer request smuggling allows hidden second request execution

Sanic is an opensource python web server/framework. In version 25.12.0, Sanic's core HTTP/1.1 chunked-body handling does not fully consume the trailer-part after the terminating zero chunk before reusing the keep-alive connection buffer. A remote unauthenticated client can place attacker-controll...

CVE-2026-85078 sanic chunked trailer request smuggling allows hidden second request execution

Sanic is an opensource python web server/framework. In version 25.12.0, Sanic's core HTTP/1.1 chunked-body handling does not fully consume the trailer-part after the terminating zero chunk before reusing the keep-alive connection buffer. A remote unauthenticated client can place attacker-controll...

CVE-2026-85078

Sanic is an open-source Python web server/framework. In version 25.12.0 , its core HTTP/1.1 chunked-body handling fails to fully consume the trailer portion after the terminating zero chunk before reusing the keep-alive connection buffer. A remote unauthenticated client can place attacker-control...

EUVD-2026-81626

Sanic is an opensource python web server/framework. Prior to version 24.12.1, and in version 25.12.0, the HTTP/1.1 response pipeline in sanic/response/types.py serializes response header names and values without rejecting carriage-return or line-feed characters. Applications that place...

CVE-2026-85077 Sanic: HTTP response header injection via missing CR/LF validation in Sanic HTTP/1.1 responses

Sanic is an opensource python web server/framework. Prior to version 24.12.1, and in version 25.12.0, the HTTP/1.1 response pipeline in sanic/response/types.py serializes response header names and values without rejecting carriage-return or line-feed characters. Applications that place...

CVE-2026-85077 Sanic: HTTP response header injection via missing CR/LF validation in Sanic HTTP/1.1 responses

Sanic is an opensource python web server/framework. Prior to version 24.12.1, and in version 25.12.0, the HTTP/1.1 response pipeline in sanic/response/types.py serializes response header names and values without rejecting carriage-return or line-feed characters. Applications that place...

CVE-2026-85077

Sanic , an open-source Python web server/framework, is affected by an HTTP response header injection vulnerability (CVSS 3.1: 8.2 HIGH ). The root cause resides in the HTTP/1.1 response pipeline in sanic/response/types.py , which serializes header names and values without rejecting carriage-retur...

CVE-2026-85077 Sanic: HTTP response header injection via missing CR/LF validation in Sanic HTTP/1.1 responses

Sanic is an opensource python web server/framework. Prior to version 24.12.1, and in version 25.12.0, the HTTP/1.1 response pipeline in sanic/response/types.py serializes response header names and values without rejecting carriage-return or line-feed characters. Applications that place...