CVE-2026-77615 Paella Player: Stored XSS via caption cue text

Paella Player is a set of libraries to create a multi stream video player. Prior to Paella Player 2.12.11 as used in Opencast prior to 19.7 and 20.2, there is a potential XSS attack though closed captions cue text. This vulnerability is fixed in 2.12.11...