In postfix-mta-sts-resolver before 0.5.1, All users can receive incorrect response from daemon under rare conditions, rendering downgrade of effective STS policy.
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:NPostfix Mta Sts Resolver Project Postfix Mta Sts Resolver
APPPostfix-Mta-Sts-Resolver Project< 0.5.1
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PATCH AVAILABLE
Vendor update available. Deploy in standard maintenance cycle.