CVE-2020-5298 json
Reflected XSS when importing CSV in OctoberCMS
published 2020-06-03 6 y ago modified 2026-07-08 4 mo ago also GHSA-gg6x-xx78-448c , EUVD-2020-0491
- cvss
- 4.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 60%
- public exploits
- 0
- none known
Summary
In OctoberCMS (october/october composer package) versions from 1.0.319 and before 1.0.466, a user with the ability to use the import functionality of the `ImportExportController` behavior can be socially engineered by an attacker to upload a maliciously crafted CSV file which could result in a reflected XSS attack on the user in question Issue has been patched in Build 466 (v1.0.466).
Patch / fix
- packagist october/backend 1.0.466
- octobercms october 1.0.466
Exploit prediction
0.91% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- packetstormsecurity.com http://packetstormsecurity.com/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.html referenced PoC, tagged "exploit" by a source, unverified
- seclists.org http://seclists.org/fulldisclosure/2020/Aug/2 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.0 | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| GitHub | 3.1 | 4.0 | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | october/backend | >=1.0.319, <1.0.466 |
1.0.466 |
Affected products
- octobercms october
Classification
References
-
github.com
/octobercms/october/commit/cd0b6a791f995d86071a024464c1702efc50f46c
web, patch, third-party-advisory
-
github.com
/octobercms/october/security/advisories/GHSA-gg6x-xx78-448c
web, patch, third-party-advisory
-
packetstormsecurity.com
/files/158730/October-CMS-Build-465-XSS-File-Read-File-Deletion-CSV-Injection.html
web, exploit, third-party-advisory, vdb-entry
-
seclists.org
/fulldisclosure/2020/Aug/2
mailing-list, web, exploit, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-5298
advisory
Sources
- CVE List CVE-2020-5298
- GitHub Advisory GHSA-gg6x-xx78-448c
- NVD CVE-2020-5298
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