What is CVE-2018-16763?

CVE-2018-16763 is a critical-severity vulnerability in Thedaylightstudio Fuel Cms, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2018-09-09.

How severe is CVE-2018-16763?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2018-16763 known to be exploited?

75 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Thedaylightstudio Fuel Cms

CVE-2018-16763

FUEL CMS 1.4.1 allows PHP Code Evaluation via the pages/select/ filter parameter or the preview/ data parameter. This can lead to Pre-Auth Remote Code Execution.

Published 2018-09-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.829 (99.7th percentile), scored 2026-10-16.

High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.829 · newest: 0.829 · change: 0.000

Affected products

Thedaylightstudio Fuel Cms

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

Public proof-of-concept exploits

References

github.com/daylightstudio/FUEL-CMS/issues/478 (Patch, Third Party Advisory, Issue Tracking)
0xd0ff9.wordpress.com/2019/07/19/from-code-evaluation-to-pre-auth-remote-code-e… (Exploit, Third Party Advisory)
www.exploit-db.com/exploits/47138 (Exploit, VDB Entry, Third Party Advisory, exploit)
packetstormsecurity.com/files/153696/fuelCMS-1.4.1-Remote-Code-Execution.html (Exploit, VDB Entry, Third Party Advisory)
packetstormsecurity.com/files/160080/Fuel-CMS-1.4-Remote-Code-Execution.html (Exploit, VDB Entry, Third Party Advisory)
packetstormsecurity.com/files/164756/Fuel-CMS-1.4.1-Remote-Code-Execution.html (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2018-16763?: CVE-2018-16763 is a critical-severity vulnerability in Thedaylightstudio Fuel Cms, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2018-09-09.
How severe is CVE-2018-16763?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2018-16763 known to be exploited?: 75 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.