In October from version 1.0.319 and before version 1.0.467, pasting content copied from malicious websites into the Froala richeditor could result in a successful self-XSS attack. This has been fixed in 1.0.467.

Affected: Packagist: october/backend

### 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 [hello@octobercms.com](mailto:hello@octobercms.com)

### 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](https://research.securitum.com/authors/michal-bentkowski/) for finding the original issue in Froala and @tomaszstrojny for reporting the issue to the October CMS team.