webhooks/base.py in Anymail (aka django-anymail) before 1.2.1 is prone to a timing attack vulnerability on the WEBHOOK_AUTHORIZATION secret, which allows remote attackers to post arbitrary e-mail tracking events.
{
"versions": [
{
"introduced": "0"
},
{
"fixed": "1.2.1"
},
{
"introduced": "0"
},
{
"last_affected": "9.0"
}
]
}