Cyber Resilience

CVE-2026-30461

RCE in Thedaylightstudio Fuel Cms 1.5.2

Public PoCRCECommand Injection
Published
15 April 2026
Modified
05 July 2026
Patch / advisory
View advisory
CVSS Score v3.1 8.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
EPSS Score 0.0053 42th percentile
Risk Priority 62 floored blend · peak EPSS

Summary

CVE-2026-30461 is a high-severity Command Injection (CWE-77) vulnerability in Thedaylightstudio Fuel Cms. Its CVSS base score is 8.3 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked at the 42th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2026-30461 is an authenticated remote code execution (RCE) vulnerability in Daylight Studio FuelCMS version 1.5.2. The flaw exists in the /controllers/Installer.php component, specifically within the add_git_submodule function, and stems from CWE-77 (command injection). Published on 2026-04-15, it carries a CVSS v3.1 base score of 8.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L), reflecting its high severity due to network accessibility, low attack complexity, and significant impacts on confidentiality and integrity.

An attacker with low-privilege authenticated access (PR:L) can exploit the vulnerability remotely over the network without user interaction. By abusing the add_git_submodule function, the attacker achieves arbitrary code execution on the server, enabling high-level compromise of confidentiality and integrity, alongside limited availability disruption.

Mitigation guidance and further details are available in vendor resources at http://daylight.com and http://fuelcms.com, the affected source code at https://github.com/daylightstudio/FUEL-CMS/blob/master/fuel/modules/fuel/controllers/Installer.php, and the Pentest-Tools advisory PTT-2025-028 at https://pentest-tools.com/PTT-2025-028-Authenticated-RCE-via-Git-Submodules.pdf.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

Daylight Studio FuelCMS v1.5.2 was discovered to contain an authenticated remote code execution (RCE) vulnerability via the /controllers/Installer.php and the function add_git_submodule.

CWE(s)
CWE-77

Related Threats

MITRE ATT&CK Enterprise Techniques

T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
attack.mitre.org →
T1059.003 Windows Command Shell Execution
Adversaries may abuse the Windows command shell for execution.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
T1059.008 Network Device CLI Execution
Adversaries may abuse scripting or built-in command line interpreters (CLI) on network devices to execute malicious command and payloads.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-30460Same product: Thedaylightstudio Fuel Cms
CVE-2018-16763Same product: Thedaylightstudio Fuel Cms
CVE-2026-30463Same product: Thedaylightstudio Fuel Cms
CVE-2023-33557Same product: Thedaylightstudio Fuel Cms
CVE-2020-17463Same product: Thedaylightstudio Fuel Cms
CVE-2024-25369Same product: Thedaylightstudio Fuel Cms
CVE-2024-57605Same product: Thedaylightstudio Fuel Cms
CVE-2026-30459Same product: Thedaylightstudio Fuel Cms
CVE-2026-30458Same product: Thedaylightstudio Fuel Cms
CVE-2026-30457Same product: Thedaylightstudio Fuel Cms

Affected Assets

thedaylightstudio
fuel cms
1.5.2

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.2.3
  • V1.2.5
  • V1.2.8
  • V1.2.9

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and evaluation can discover command-construction flaws before deployment.

SI-10 Information Input Validation good match

Input validation directly stops construction of commands from untrusted data containing special elements.

SA-8 Security and Privacy Engineering Principles partial match

Secure engineering principles include proper neutralization and safe command construction practices.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and neutralization that prevent command injection.

DE.CM-09 partial match
prevents

Runtime monitoring of software and data can detect anomalous command execution resulting from injection.

ID.RA-01 partial match
prevents

Identifying recorded vulnerabilities enables remediation of command-injection flaws before exploitation.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.28 Secure coding mostly match
prevents

Secure coding standards require proper escaping and parameterization of commands, directly eliminating CWE-77.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development catches command-injection vulnerabilities before release.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates input validation and command construction practices that directly prevent command injection.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly call for controls against injection flaws including command injection.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles reduce the attack surface but do not prescribe the specific neutralization techniques needed.

A.8.31 Separation of development, test and production environments none match
none

Environment separation limits the blast radius of an exploited command injection but does not prevent the flaw itself.

References