CVE-2021-43827

Source
https://nvd.nist.gov/vuln/detail/CVE-2021-43827
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43827.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-43827
Related
  • GHSA-58vr-c56v-qr57
Published
2021-12-14T23:15:08Z
Modified
2025-01-14T22:02:15Z
Summary
[none]
Details

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.

References

Affected packages

Git / github.com/discourse/discourse-footnote

Affected ranges

Type
GIT
Repo
https://github.com/discourse/discourse-footnote
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
Fixed