CVE-2020-4061
Cross-site Scripting in OctoberPotential self-XSS when pasting content from malicious websites
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Cross-site Scripting in OctoberPotential self-XSS when pasting content from malicious websites
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.
- Record
CVE-2020-4061- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2020-0531
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.
- Record
EUVD-2020-0531- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3pc2-fm7p-q2vg
Cross-site Scripting in October
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
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.
- Record
GHSA-3pc2-fm7p-q2vg- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2020-4061- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N - CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2020-4061- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
OSVGHSA-3pc2-fm7p-q2vg
Cross-site Scripting in October
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
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.
- Record
GHSA-3pc2-fm7p-q2vg- CVSS 3.1
- 3.7 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
october/backendPackagist |
1.0.319 up to 1.0.467 | 1.0.467 |
october/backendPackagist |
1.0.319 up to 1.0.467, plus listed versions v1.0.319v1.0.320v1.0.321v1.0.322v1.0.323 Show 45 moreShow lessv1.0.324v1.0.325v1.0.326v1.0.327v1.0.328v1.0.329v1.0.330v1.0.331v1.0.332v1.0.333v1.0.334v1.0.335v1.0.336v1.0.337v1.0.338v1.0.339v1.0.340v1.0.341v1.0.342v1.0.343v1.0.344v1.0.345v1.0.346v1.0.347v1.0.348v1.0.349v1.0.350v1.0.351v1.0.352v1.0.353v1.0.354v1.0.355v1.0.356v1.0.357v1.0.358v1.0.359v1.0.360v1.0.361v1.0.362v1.0.363v1.0.364v1.0.365v1.0.366v1.0.367v1.0.368 |
1.0.467 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-4061 is a low vulnerability (CVSS 3.7) in October Cms October, published July 2, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.82%, the 57th percentile. Fixed in october/backend 1.0.467.
References
Left out here: 98 versions. The JSON record has them.