GHSA-3pc2-fm7p-q2vg Cross-site Scripting in October

• Packagist october/backend: >= 1.0.319, < 1.0.467 → fixed in 1.0.467

Impact Pasting content copied from malicious websites into the Froala richeditor could result in a successful self-XSS attack. Patches Issue has been patched in Build 467 (v1.0.467). Workarounds Apply https://github.com/octobercms/october/commit/b384954a29b89117e1c0d6035b3ede4f46df67c5 to your installation manually if unable to upgrade to Build 467. References • https://research.securitum.com/the-curious-case-of-copy-paste/ For more information If you have any questions or comments about this advisory: • Email us at [email protected] Threat Assessment Assessed as Low given that by the nature of the attack it can only impact users that do it to themselves by copying and pasting from malicious websites. Acknowledgements Thanks to Michał Bentkowski of Securitum for finding the original issue in Froala and @tomaszstrojny for reporting the issue to the October CMS team.