CVE-2018-16763
CriticalExploitedPublic exploitFUEL CMS 1.4.1 allows PHP Code Evaluation via the pages/select/ filter parameter or the preview/ data parameter.
Published Sep 9, 2018 · Updated Aug 7, 2026
Key Facts
Patch immediately- CVE-2018-16763 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Fuel CMS (Thedaylightstudio).
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since May 26, 2022. Public exploit code is available.
- EPSS estimates a 83% probability of exploitation in the next 30 days.
- Fixed versions are available, including Fuel CMS <=1.4.2, Fuel CMS 1.4.2.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
83%
Higher than 99.6% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2018-16763 brief as a PDF
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Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | May 26, 2022 | n/a | Not reported |
| CIRCL KEV | Oct 14, 2023 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Fuel CMSThedaylightstudio | See advisory | 1.4.2 |
Patched Releases
Fuel CMS
<=1.4.2
Timeline
Publicly disclosed
Sep 9, 2018
Added to Industry KEV feed
May 26, 2022
Added to CIRCL KEV
Oct 14, 2023
Last updated
Aug 7, 2026
Weakness Type
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
References
- patchhttps://github.com/daylightstudio/FUEL-CMS/issues/478
- exploithttp://packetstormsecurity.com/files/153696/fuelCMS-1.4.1-Remote-Code-Execution.html
- exploithttp://packetstormsecurity.com/files/160080/Fuel-CMS-1.4-Remote-Code-Execution.html
- exploithttp://packetstormsecurity.com/files/164756/Fuel-CMS-1.4.1-Remote-Code-Execution.html
- exploithttps://0xd0ff9.wordpress.com/2019/07/19/from-code-evaluation-to-pre-auth-remote-code-execution-cve-2018-16763-bypass/
FAQ
Common Questions.
FUEL CMS 1.4.1 allows PHP Code Evaluation via the pages/select/ filter parameter or the preview/ data parameter.
Affected: Fuel CMS (Thedaylightstudio). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since May 26, 2022.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Fuel CMS <=1.4.2, Fuel CMS 1.4.2.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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