In zulip before 1.3.12, deactivated users could access messages if SSO was enabled.
{
"cpe": "cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "1.3.12"
}
],
"source": "CPE_RANGE"
}