The image thumbnailing handler in Zulip Server versions 1.9.0 to before 2.0.8 allowed an open redirect that was visible to logged-in users.
{ "versions": [ { "introduced": "1.9.0" }, { "fixed": "2.0.8" } ] }
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-19775.json"