What is CVE-2018-20975?

CVE-2018-20975 is a medium-severity vulnerability in Fatfreecrm Fat Free Crm, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-08-20.

How severe is CVE-2018-20975?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Fatfreecrm Fat Free Crm

CVE-2018-20975

Fat Free CRM before 0.18.1 has XSS in the tags_helper in app/helpers/tags_helper.rb.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-08-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.012 (68.2th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Fatfreecrm Fat Free Crm

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/fatfreecrm/fat_free_crm/releases/tag/v0.18.1 (Release Notes)
github.com/fatfreecrm/fat_free_crm/commit/6d60bc8ed010c4eda05d6645c64849f415f68… (Patch, Third Party Advisory)
github.com/fatfreecrm/fat_free_crm/compare/v0.17.3...v0.18.1 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2018-20975?: CVE-2018-20975 is a medium-severity vulnerability in Fatfreecrm Fat Free Crm, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-08-20.
How severe is CVE-2018-20975?: Medium severity. CVSS v3 base score is 6.1 out of 10.