CVE-2023-43657 (discourse-encrypt)

discourse-encrypt is a plugin that provides a secure communication channel through Discourse. Improper escaping of encrypted topic titles could lead to a cross site scripting (XSS) issue when a site has content security policy (CSP) headers disabled. Having CSP disabled is a non-default configuration, and having it disabled with discourse-encrypt installed will result in a warning in the Discourse admin dashboard. This has been fixed in commit `9c75810af9` which is included in the latest version of the discourse-encrypt plugin. Users …

channel communication configuration content security cross site scripting csp cve default disabled discourse encrypt encrypted headers issue non plugin policy result scripting secure communication security security policy topic warning xss