Cross-site Scripting (XSS) via chat excerpts when content security policy (CSP) disabled in Discourse
Summary
Cross-site Scripting (XSS) via chat excerpts when content security policy (CSP) disabled in Discourse
Original description
The description as published by the source.
Discourse is an open source platform for community discussion. An attacker can execute arbitrary JavaScript on users' browsers by sending a maliciously crafted chat message and replying to it. This issue only affects sites with CSP disabled. This problem is patched in the latest version of Discourse. All users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum. Users who do upgrade should also consider enabling a CSP as well as a proactive measure.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Affected packages
References
- advisory developer.mozilla.org
- advisory github.com
- web nvd.nist.gov