The remote Debian host is missing a security-related update.
It was discovered that jackson-databind, a Java library used to parse JSON and other data formats, improperly validated user input prior to deserializing: following DSA-4004-1 for CVE-2017-7525, an additional set of classes was identified as unsafe for deserialization.
Upgrade the jackson-databind packages. For the oldstable distribution (jessie), this problem has been fixed in version 2.4.2-2+deb8u2. For the stable distribution (stretch), this problem has been fixed in version 2.8.6-1+deb9u2.