CVE-2020-5298

lowpriority · track · 19EPSS 0.009 · 60 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.91% (60th) EPSS

CVSS 3.5 · low

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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).

cvss

Technical severity, 0–10. One row per scoring source.

4.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 3.5–4.8

v2.03.5lowAV:N/AC:M/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 6.8 · impact 2.9

v3.14.8mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 1.7 · impact 2.7

v3.14mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:Nsecondary · ENISA EU

v3.14mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:Nsecondary · security-advisories@github.comexploitability 1 · impact 2.7

v3.14mediumCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:Nsecondary · OSV

v3.14.4mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79USCWE-87USCWE-87US

affected products (3)

Products and version ranges known to be affected.

octobercms October1.0.319, → 1.0.466enisa_euvdEU
octobercms october1.0.319 → 1.0.466nvdUScpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:*
Packagist october/backend1.0.319 → 1.0.466osvUSpkg:composer/october/backend

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-gg6x-xx78-448cReflected XSS when importing CSV in OctoberCMS2020-06-03ghsa · osvUS
### Impact A user with the ability to use the import functionality of the `ImportExportController` behavior could 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 ### Patches Issue has been patched in Build 466 (v1.0.466). ### Workarounds Apply https://github.com/octobercms/october/commit/cd0b6a791f995d86071a024464c1702efc50f46c to your installation manually if unable to upgrade to Build 466. ### References Reported by [Sivanesh Ashok](https://stazot.com/) ### For more information If you have any questions or comments about this advisory: * Email us at [hello@octobercms.com](mailto:hello@octobercms.com) ### Threat assessment: <img width="1100" alt="Screen Shot 2020-03-31 at 2 01 52 PM" src="https://user-images.githubusercontent.com/7253840/78070158-8f7ef580-7358-11ea-950c-226533f6a0a3.png">

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2020-06-03modified 2026-06-17

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references (14)

External citations — patches, advisories, analysis.

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