CVE-2020-5299
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…
Does this matter?
Lower severity and a low EPSS score (1.00%). Track it; it rarely justifies an emergency change on its own.
Description
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).
- CVSS 3.1
- 5.1 MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:L
- EPSS
- 1.00% probability · 63th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-77
- Affected
- octobercms/october
- Source
- security-advisories@github.com
EPSS 1.0% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://packetstormsecurity.com/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.htmlThird Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Aug/2Mailing List, Third Party Advisory
- https://github.com/octobercms/library/commit/c84bf03f506052c848f2fddc05f24be631427a1aPatch, Third Party Advisory
- https://github.com/octobercms/october/commit/802d8c8e09a2b342649393edb6d3ceb958851484Patch, Third Party Advisory
- https://github.com/octobercms/october/security/advisories/GHSA-4rhm-m2fp-hx7qPatch, Third Party Advisory
- http://packetstormsecurity.com/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.htmlThird Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Aug/2Mailing List, Third Party Advisory
- https://github.com/octobercms/library/commit/c84bf03f506052c848f2fddc05f24be631427a1aPatch, Third Party Advisory
- https://github.com/octobercms/october/commit/802d8c8e09a2b342649393edb6d3ceb958851484Patch, Third Party Advisory
- https://github.com/octobercms/october/security/advisories/GHSA-4rhm-m2fp-hx7qPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.