What’s Vulnerable › Vulnerabilities

CVE-2020-5297: Upload whitelisted files to any directory in OctoberCMS

• Severity: low (CVSS 2.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-06-03 · updated 2026-06-17
• Weakness: CWE-73

Description

In OctoberCMS (october/october composer package) versions from 1.0.319 and before 1.0.466, an attacker can exploit this vulnerability to upload jpg, jpeg, bmp, png, webp, gif, ico, css, js, woff, woff2, svg, ttf, eot, json, md, less, sass, scss, xml files to any directory of an October CMS server. The vulnerability is only exploitable by an authenticated backend user with the `cms.manage_assets` permission. Issue has been patched in Build 466 (v1.0.466).

Affected products

• octobercms october: from 1.0.319 before 1.0.466 — fixed in 1.0.466

How to fix

Upgrade to a fixed version: octobercms october 1.0.466. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.html
• http://seclists.org/fulldisclosure/2020/Aug/2
• https://github.com/octobercms/october/commit/6711dae8ef70caf0e94cec434498012a2ccd86b8
• https://github.com/octobercms/october/security/advisories/GHSA-9722-rr68-rfpg
• http://packetstormsecurity.com/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.html
• http://seclists.org/fulldisclosure/2020/Aug/2
• https://github.com/octobercms/october/commit/6711dae8ef70caf0e94cec434498012a2ccd86b8
• https://github.com/octobercms/october/security/advisories/GHSA-9722-rr68-rfpg

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