[joplin] Cross-site Scripting in Joplin

An XSS issue in Joplin desktop allows arbitrary code execution via a malicious HTML embed tag.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-15930
• https://github.com/laurent22/joplin/issues/3552
• https://github.com/laurent22/joplin/releases/tag/v1.1.4
• http://packetstormsecurity.com/files/159316/Joplin-1.0.245-Cross-Site-Scripting-Code-Execution.html
• https://github.com/laurent22/joplin/commit/57d750bc9aeb0f98d53ed4b924458b54984c15ff
• https://github.com/advisories/GHSA-cgc7-mwp4-3ccx