Stored XSS in October
Priority LOW 24CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
In October from version 1.0.319 and before version 1.0.466, a user with access to a markdown FormWidget that stores data persistently could create a stored XSS attack against themselves and any other users with access to the generated HTML from the field. This has been fixed in 1.0.466. For users of the RainLab.Blog plugin, this has also been fixed in 1.4.1.
Why it matters now
EPSS 0.01148 67th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed October (October CMS): 1.0.466october/backend (Packagist): 1.0.466
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| October CMS | October | 1.0.319 to before 1.0.466 | 1.0.466 | Patch available | CNA |
| — | october/backend (Packagist) | 1.0.319 to before 1.0.466 | 1.0.466 | Patch available | GHSA-w4pj-7p68-3vgv |
- October VendorOctober CMS Affected 1.0.319 to before 1.0.466 Fixed in 1.0.466 Patch available CNA
- october/backend (Packagist) Vendor— Affected 1.0.319 to before 1.0.466 Fixed in 1.0.466 Patch available GHSA-w4pj-7p68-3vgv
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:* | 1.0.319 to before 1.0.466 | Vulnerable | October CMS |
- cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:* Versions 1.0.319 to before 1.0.466 Vulnerable ·October CMS
Remediation
- Fix · CNA October (October CMS) Fixed in 1.0.466
- Fix · GHSA-w4pj-7p68-3vgv october/backend (Packagist) Fixed in 1.0.466 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2020-11083
- 2026-10-03 Alias added: GHSA-w4pj-7p68-3vgv
References
Exploit 2
Patch 3
More October CMS October vulnerabilities
- TI-2021-12316 Account Takeover in Octobercms KEVCVSS 3.1CRITICAL 9.1
- TI-2021-12318 Arbitrary code execution in october/system CVSS 3.1HIGH 8.8
- TI-2017-14456 October CMS build 412 is vulnerable to PHP code execution in the file upload… CVSS 3.0HIGH 7.2
- TI-2023-23545 A Cross-Site Scripting (XSS) vulnerability in installation of October v.3.4.16 allows an… CVSS 3.1MEDIUM 5.4
- TI-2023-19223 An arbitrary file upload vulnerability in October CMS v3.4.4 allows attackers to execute… CVSS 3.1MEDIUM 5.4
- TI-2024-30847 October 3.6.30 allows an authenticated admin account to upload a PDF file containing… CVSS 3.1MEDIUM 4.7
Sources
- CVE-2020-11083 · CVE Program
- CVE-2020-11083 · NVD
- FIRST EPSS
- GHSA-w4pj-7p68-3vgv · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences