CVE-2020-4061
lowpriority · track · 22EPSS 0.008 · 57 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.5–5.4
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-3pc2-fm7p-q2vgCross-site Scripting in October2020-07-02ghsa · osvUS
### 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.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://github.com/octobercms/october/commit/b384954a29b89117e1c0d6035b3ede4f46df67c5cnnvd
- https://github.com/octobercms/october/security/advisories/GHSA-3pc2-fm7p-q2vgcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-4061cnnvd
- https://research.securitum.com/the-curious-case-of-copy-paste/cnnvd
- https://github.com/octobercms/october/commit/b384954a29b89117e1c0d6035b3ede4f46df67c5enisa_euvd
- https://github.com/octobercms/october/security/advisories/GHSA-3pc2-fm7p-q2vgenisa_euvd
- https://research.securitum.com/the-curious-case-of-copy-paste/enisa_euvd
- https://github.com/octobercms/october/commit/b384954a29b89117e1c0d6035b3ede4f46df67c5PatchThird Party Advisorynvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan