What is CVE-2020-26046?

CVE-2020-26046 is a medium-severity vulnerability in Thedaylightstudio Fuel Cms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-01-05.

How severe is CVE-2020-26046?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Thedaylightstudio Fuel Cms

CVE-2020-26046

FUEL CMS 1.4.11 has stored XSS in Blocks/Navigation/Site variables. This could lead to cookie stealing and other malicious actions. This vulnerability can be exploited with an authenticated account and also impact other visitors.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-01-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (49.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Thedaylightstudio Fuel Cms — versions 1.4.11

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

getfuelcms.com (Product)
github.com/daylightstudio/FUEL-CMS/issues/574 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-26046?: CVE-2020-26046 is a medium-severity vulnerability in Thedaylightstudio Fuel Cms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-01-05.
How severe is CVE-2020-26046?: Medium severity. CVSS v3 base score is 5.4 out of 10.