Discourse vulnerable to HTML injection via prohibited iframe… (CVE-2026-27166)

Résumé

Discourse vulnerable to HTML injection via prohibited iframe URLs

Description d'origine

La description telle que publiée par la source (souvent en anglais).

Discourse is an open source discussion platform. Prior to versions 2026.3.0, 2026.2.1 and 2026.1.2, insufficient cleanup in the default Codepen allowed iframes value allows an attacker to trick a user into changing the URL of the main page. This issue has been fixed in versions 2026.3.0, 2026.2.1 and 2026.1.2. To workaround this issue, remove Codepen from the list of allowed iframes.

Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

Paquets affectés

Bitnami discourse

[{"type":"SEMVER","events":[{"introduced":"2026.1.0"},{"fixed":"2026.1.2"},{"introduced":"2026.2.0"},{"fixed":"2026.2.1"},{"introduced":"2026.3.0"},{"fixed":"2026.3.0"}]}]

Références

advisory github.com
patch github.com
web nvd.nist.gov