Last Updated: 2022-09-20
In unlikely event of finding a security vulnerability directly relating to jackson-annotations
package -- unlikely, as there is very little code in this package --
the recommended mechanism for reporting possible security vulnerabilities follows
so-called "Coordinated Disclosure Plan" (see definition of DCP
for general idea). The first step is to file a Tidelift security contact:
Tidelift will route all reports via their system to maintainers of relevant package(s), and start the
process that will evaluate concern and issue possible fixes, send update notices and so on.
Note that you do not need to be a Tidelift subscriber to file a security contact.
(for more in-depth explanation, see Apache Release Signing document)
To verify that any given Jackson artifact has been signed with a valid key, have a look at KEYS file of the main Jackson repo:
https://github.com/FasterXML/jackson/blob/master/KEYS
which lists all known valid keys in use.