In Zammad 5.2.0, an attacker could manipulate the rate limiting in the 'forgot password' feature of Zammad, and thereby send many requests for a known account to cause Denial Of Service by many generated emails which would also spam the victim.
{
"versions": [
{
"introduced": "0"
},
{
"last_affected": "5.2.0-NA"
},
{
"introduced": "0"
},
{
"last_affected": "5.2.0-alpha"
}
]
}