Basecamp: Bypass of image rewriting / tracking blocker via srcset

CVSS ---- Medium 4.7 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N Description ----------- One of the security features of Hey is blocking of tracking pixels to preserve users privacy. As such, img tags and similar are rewritten by the app to point to gopher.hey.com. However, an attacker can bypas...