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TI-2020-04355 Aliases CVE-2020-5299GHSA-4rhm-m2fp-hx7q

Potential CSV Injection vector in OctoberCMS

Priority LOW 25CWE-77Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-77.

Summary

In OctoberCMS (october/october composer package) versions from 1.0.319 and before 1.0.466, any users with the ability to modify any data that could eventually be exported as a CSV file from the `ImportExportController` could potentially introduce a CSV injection into the data to cause the generated CSV export file to be malicious. This requires attackers to achieve the following before a successful attack can be completed: 1. Have found a vulnerability in the victims spreadsheet software of choice. 2. Control data that would potentially be exported through the `ImportExportController` by a theoretical victim. 3. Convince the victim to export above data as a CSV and run it in vulnerable spreadsheet software while also bypassing any sanity checks by said software. Issue has been patched in Build 466 (v1.0.466).

Why it matters now

EPSS 0.01002 63rd percentileScored 2026-11-07
Fix Fixed october (octobercms): 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

VendorProductAffected versionsFixed inStatusSource
October CMSoctober1.0.319 to before 1.0.4661.0.466Patch availableCNA
—october/backend (Packagist)1.0.319 to before 1.0.4661.0.466Patch availableGHSA-4rhm-m2fp-hx7q
  • 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-4rhm-m2fp-hx7q

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:*1.0.319 to before 1.0.466VulnerableOctober CMS
  • cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:* Versions 1.0.319 to before 1.0.466 Vulnerable ·October CMS

Remediation

  • Fix · CNA october (octobercms) Fixed in 1.0.466
  • Fix · GHSA-4rhm-m2fp-hx7q october/backend (Packagist) Fixed in 1.0.466 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-5299
  2. 2026-10-03 Alias added: GHSA-4rhm-m2fp-hx7q

References

Patch 3

Advisory 3

  • 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
See all 56 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences