CVE-2026-85077
highSanic is an opensource python web server/framework.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/sanic-org/sanic/commit/47349d689d65fa1907977ac100e867894aeafb22 security-advisories@github.com
- https://github.com/sanic-org/sanic/commit/9a95bb1c187558949606b915f5162c15f2db781b security-advisories@github.com
- https://github.com/sanic-org/sanic/commit/a332796506c7c588b6930b02a8886e43eb8ea8d6 security-advisories@github.com
- https://github.com/sanic-org/sanic/pull/3164 security-advisories@github.com
- https://github.com/sanic-org/sanic/pull/3165 security-advisories@github.com
- https://github.com/sanic-org/sanic/releases/tag/v24.12.1 security-advisories@github.com
- https://github.com/sanic-org/sanic/releases/tag/v25.12.1 security-advisories@github.com
- https://github.com/sanic-org/sanic/security/advisories/GHSA-m64h-22vf-48wm security-advisories@github.com