Jenkins Email Extension Plugin 2.75 and earlier does not perform hostname validation when connecting to the configured SMTP server.
[
{
"product": "Jenkins Email Extension Plugin",
"vendor": "Jenkins project",
"versions": [
{
"lessThanOrEqual": "2.75",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "2.69.1"
},
{
"status": "unaffected",
"version": "2.68.1"
}
]
}
]