CVE-2026-3709
Published: 08 March 2026
Summary
CVE-2026-3709 is a medium-severity Injection (CWE-74) vulnerability in Carmelo Simple Flight Ticket Booking System. Its CVSS base score is 6.9 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 26.7th 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 are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2026-3709 is a SQL injection vulnerability in code-projects Simple Flight Ticket Booking System 1.0. The issue affects an unknown function in the /register.php file, where manipulation of the Username argument enables the injection. Associated with CWE-74 (Improper Neutralization of Special Elements used in an SQL Command) and CWE-89 (SQL Injection), it carries a CVSS v3.1 base score of 7.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L), indicating high severity due to its network accessibility and lack of prerequisites.
The vulnerability can be exploited remotely by unauthenticated attackers with low complexity, requiring no user interaction or privileges. Successful exploitation allows limited impacts on confidentiality, integrity, and availability, potentially enabling data extraction, modification, or disruption within the application's database. An exploit is publicly available, increasing the risk of real-world attacks against exposed instances.
Advisories and further details are available in references such as VulDB entries (ctiid.349655, id.349655, submit.766142), a GitHub issue at github.com/Owen-YuanW/CVE/issues/3, and the project site at code-projects.org, which may provide mitigation guidance or patches, though specifics are not detailed here.
Notably, the public exploit availability heightens the urgency for practitioners to scan and patch deployments of this booking system.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-10216
Vulnerability details
A weakness has been identified in code-projects Simple Flight Ticket Booking System 1.0. This affects an unknown function of the file /register.php. Executing a manipulation of the argument Username can lead to sql injection. The attack may be launched remotely.…
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The exploit has been made available to the public and could be used for attacks.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
SQL injection in publicly accessible /register.php enables remote unauthenticated exploitation of a public-facing web app for database access.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly requires validation and sanitization of inputs such as the Username argument in register.php to block SQL injection payloads.
Mandates timely remediation of the known SQL injection flaw in /register.php before public exploits can be used.
Enforces application-level access decisions that can incorporate parameterized queries or allow/deny logic to stop unauthorized SQL commands.