Description
managers/views/iframe.js in FuturePress EPub.js before 0.3.89 allows XSS.
Remediation
References
https://github.com/futurepress/epub.js/blob/5c7f21d648d9d20d44c6c365d164b16871847023/src/managers/views/iframe.js#L373
https://github.com/futurepress/epub.js/commit/ab4dd46408cce0324e1c67de4a3ba96b59e5012e
https://github.com/futurepress/epub.js/compare/v0.3.88...v0.3.89