October CMS stored XSS by authenticated backend user with improper configuration
Priority LOW 25CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- 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 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
October is a Content Management System (CMS) and web platform to assist with development workflow. A user with access to the media manager that stores SVG files could create a stored XSS attack against themselves and any other user with access to the media manager when SVG files are supported. This issue has been patched in version 3.5.2.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0041 35th percentileScored 2026-11-07
Fix Fixed october/system (Packagist): 3.5.2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| October CMS | october | >= 3.0.0, 3.5.2 | — | No fix listed | CNA |
| — | october/system (Packagist) | 3.0.0 to before 3.5.2 | 3.5.2 | Patch available | GHSA-rvx8-p3xp-fj3p |
- october VendorOctober CMS Affected >= 3.0.0, 3.5.2 Fixed in — No fix listed CNA
- october/system (Packagist) Vendor— Affected 3.0.0 to before 3.5.2 Fixed in 3.5.2 Patch available GHSA-rvx8-p3xp-fj3p
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:* | 3.0.0 to before 3.5.2 | Vulnerable | October CMS |
- cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:* Versions 3.0.0 to before 3.5.2 Vulnerable ·October CMS
Remediation
- Fix · GHSA-rvx8-p3xp-fj3p october/system (Packagist) Fixed in 3.5.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-44383
- 2026-10-03 Alias added: GHSA-rvx8-p3xp-fj3p
References
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-2023-44383 · CVE Program
- CVE-2023-44383 · NVD
- FIRST EPSS
- GHSA-rvx8-p3xp-fj3p · 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