CVE-2021-47980: Daylight Studio Fuel CMS blind SQL injection in Activity Log

CVE-2021-47980 · Severity: high · CVSS 7.1 · Published 2026-05-16

Fuel CMS, a content management system built on the CodeIgniter framework, is vulnerable to a security flaw in its Activity Log interface. An authorized user with access to the system can execute malicious database commands to extract sensitive information. This could lead to the unauthorized disclosure of internal system data, potentially compromising the entire website's database.

Quick answers

Is CVE-2021-47980 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2021-47980 being exploited in the wild.
How severe is CVE-2021-47980?
High severity, with a CVSS score of 7.1, published 16 May 2026.
Which products and versions are affected?
Daylight Studio Fuel CMS <= 1.4.13.
Is there a fix for CVE-2021-47980?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2021-47980 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2021-47980?
Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A blind SQL injection vulnerability exists in Fuel CMS version 1.4.13 and earlier. The flaw is located within the 'col' parameter of the Activity Log interface (accessible via the /fuel/logs/items endpoint). An authenticated attacker can inject malicious SQL payloads into this parameter to perform time-based blind SQL injection. By observing delays in server responses (e.g., using the SLEEP function), an attacker can systematically extract sensitive data from the underlying database. The vulnerability stems from improper neutralization of special elements used in SQL commands within the logging component. While the vendor website shows a newer version (1.5.2) is available, users on 1.4.13 should upgrade to mitigate this risk.

Affected products

  • Daylight Studio Fuel CMS <= 1.4.13

Timeline

  • 2021-04-11: disclosed: Vulnerability discovered and exploit developed by Rahad Chowdhury
  • 2021-11-15: other: Exploit published to Exploit-DB
  • 2026-05-16: advisory: CVE published and enriched by VulnCheck/NVD

References

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