CVE-2026-30463: 
Fuel CMS vulnerability analysis and mitigation

CVE-2026-30463 is a SQL injection vulnerability in Daylight Studio FuelCMS v1.5.2, affecting the /controllers/Login.php component. The vulnerability allows unauthenticated, network-based attackers to inject malicious SQL queries without any user interaction. It was published on March 26, 2026, and carries a CVSS v3.1 base score of 7.7 (High) (Feedly, CVEFeed).

The root cause is improper neutralization of special elements used in SQL commands (CWE-89), specifically within the login controller (/controllers/Login.php) of FuelCMS v1.5.2. An unauthenticated attacker can craft malicious HTTP requests to the login endpoint, injecting SQL syntax that is passed unsanitized to the underlying database query. The attack vector is network-based, requires no privileges or user interaction, and has high attack complexity. A reference document (PDF) from Pentest Tools describing a SQL injection via password reset has been associated with this CVE, though its content was found to be unreadable/binary (Feedly).

Successful exploitation could allow an unauthenticated attacker to read, modify, or delete database records, potentially exposing sensitive user credentials and application data (high confidentiality and integrity impact). Depending on database server configuration and privileges, the attacker may also be able to execute operating system commands, enabling remote code execution and lateral movement within the hosting environment. Availability impact is rated low, suggesting the primary risk is data compromise rather than service disruption (Feedly).

No confirmed, functional public exploit has been verified for this vulnerability; a referenced PDF from Pentest Tools was found to contain only unreadable binary content with no actionable exploit code or reproduction steps (Feedly). There is no evidence of in-the-wild exploitation or threat actor attribution at this time. The EPSS score is approximately 0.012% (0.000120), indicating a very low probability of exploitation in the near term. CVE-2026-30463 is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

1. Reconnaissance: Identify internet-facing FuelCMS v1.5.2 installations using search engines (e.g., Shodan, Censys) or web crawlers looking for FuelCMS-specific fingerprints in HTTP responses or page source.
2. Target the login endpoint: Navigate to or send HTTP POST requests to the /controllers/Login.php endpoint of the target application.
3. Inject SQL payload: Insert SQL injection payloads into the username or password fields (e.g., ' OR '1'='1' -- or time-based blind injection payloads such as ' AND SLEEP(5)--) to test for unsanitized input handling.
4. Extract data: Use tools such as sqlmap targeting the login form to automate enumeration of databases, tables, and sensitive records (e.g., user credentials, admin hashes).
5. Escalate if possible: If the database user has FILE or EXECUTE privileges, attempt to write web shells or execute OS commands to achieve remote code execution on the underlying server (Feedly).

• Network: Unusual or repeated HTTP POST requests to /controllers/Login.php containing SQL metacharacters (e.g., single quotes ', double dashes --, OR 1=1, UNION SELECT, SLEEP()) in login parameters.
• Logs: Web server access logs showing high volumes of login attempts with malformed or abnormally long parameter values; database error messages logged by the application indicating SQL syntax errors.
• File System: Unexpected PHP web shell files created in the FuelCMS web root or upload directories following a successful exploitation attempt.
• Process: Unusual child processes spawned by the web server process (e.g., bash, sh, curl, wget) that may indicate OS command execution via SQL injection escalation.

No official patch from Daylight Studio has been confirmed for FuelCMS v1.5.2 at the time of disclosure. Organizations should upgrade to a version of FuelCMS beyond 1.5.2 if one becomes available. In the interim, implement parameterized queries and prepared statements in the Login.php component, deploy a Web Application Firewall (WAF) to detect and block SQL injection patterns, and restrict database user permissions to the minimum required (least privilege). Application and database logs should be actively monitored for suspicious SQL activity (Feedly).

The vulnerability received brief coverage on automated vulnerability tracking platforms such as VulnDB, CVEFeed, and Radar/OffSeq shortly after publication. A mention was noted on Mastodon via @thehackerwire. No significant vendor statements, notable researcher commentary, or major media coverage has been identified beyond routine CVE aggregation (Feedly).