CVE-2026-85077 | BDVDB-2026-375775 Detail
sanic-orgsanic
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.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact high, availability impact none. Attack vector: network.
Weaknesses#
- CWE-113 Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')
References#
- https://github.com/sanic-org/sanic/security/advisories/GHSA-m64h-22vf-48wm
- https://github.com/sanic-org/sanic/pull/3164
- https://github.com/sanic-org/sanic/pull/3165
- https://github.com/sanic-org/sanic/commit/47349d689d65fa1907977ac100e867894aeafb22
- https://github.com/sanic-org/sanic/commit/9a95bb1c187558949606b915f5162c15f2db781b
- https://github.com/sanic-org/sanic/commit/a332796506c7c588b6930b02a8886e43eb8ea8d6
- https://github.com/sanic-org/sanic/releases/tag/v24.12.1
- https://github.com/sanic-org/sanic/releases/tag/v25.12.1
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.