WordPress before 5.2.4 is vulnerable to poisoning of the cache of JSON GET requests because certain requests lack a Vary: Origin header.
Created wordpress tracking bugs for this issue:
Affects: epel-6 [bug 1775739]
Affects: epel-7 [bug 1775740]
Affects: fedora-all [bug 1775738]
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.