Vulnerability Information
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Vulnerability Title
Inline footnotes wrapped in <a> tags can cause errors in discourse-footnotes
Vulnerability Description
discourse-footnote is a library providing footnotes for posts in Discourse. ### Impact When posting an inline footnote wrapped in `<a>` tags (e.g. `<a>^[footnote]</a>`, the resulting rendered HTML would include a nested `<a>`, which is stripped by Nokogiri because it is not valid. This then caused a javascript error on topic pages because we were looking for an `<a>` element inside the footnote reference span and getting its ID, and because it did not exist we got a null reference error in javascript. Users are advised to update to version 0.2. As a workaround editing offending posts from the rails console or the database console for self-hosters, or disabling the plugin in the admin panel can mitigate this issue.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Vulnerability Type
对异常条件的处理不恰当
Vulnerability Title
Discourse 安全漏洞
Vulnerability Description
Discourse是一套开源的社区讨论平台。该平台包括社区、电子邮件和聊天室等功能。 Discourse footnote 存在安全漏洞，攻击者可利用该漏洞触发空引用 javascript 错误。
CVSS Information
N/A
Vulnerability Type
N/A