Detections
Analytics
CVE-2026-85077
high
Description
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 attacker-controlled data in response.headers, file(..., filename=...), or cookie path and domain attributes can therefore emit injected headers and may split responses. Depending on application and proxy behavior, this can enable session fixation through injected cookies, cache poisoning, or security-header corruption. This issue is fixed in versions 24.12.1 and 25.12.1.
References
https://github.com/sanic-org/sanic/security/advisories/GHSA-m64h-22vf-48wm
https://github.com/sanic-org/sanic/releases/tag/v25.12.1
https://github.com/sanic-org/sanic/releases/tag/v24.12.1
https://github.com/sanic-org/sanic/pull/3165
https://github.com/sanic-org/sanic/pull/3164
https://github.com/sanic-org/sanic/commit/a332796506c7c588b6930b02a8886e43eb8ea8d6
https://github.com/sanic-org/sanic/commit/9a95bb1c187558949606b915f5162c15f2db781b
https://github.com/sanic-org/sanic/commit/47349d689d65fa1907977ac100e867894aeafb22