The pypi package aiohttp-session before 2.4.0 contained a Session Fixation vulnerability in load_session function for RedisStorage that can result in Session Hijacking. This attack appear to be exploitable via Any method that allows setting session cookies (?session=<>, or meta tags or script tags with Set-Cookie).
{
"cwe_ids": [
"CWE-384"
],
"severity": "HIGH",
"nvd_published_at": "2018-06-26T16:29:01Z",
"github_reviewed_at": "2020-06-16T21:35:06Z",
"github_reviewed": true
}