CVE-2026-3709
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA 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. The exploit has been made available to the public and could be used for attacks.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceSQL injection vulnerability in the Username parameter of /register.php in Simple Flight Ticket Booking System 1.0 allows remote attackers to execute arbitrary SQL commands via unsanitized user input. The public availability of an exploit increases urgency, and the critical CVSS score (9.8) indicates potential for complete system compromise including data exfiltration or authentication bypass.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 1.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm the installed product is Simple Flight Ticket Booking SystemIdentify the application by reviewing the web application source files, particularly any readme, license, or header files that identify the software nameAffected if The installed product is not Carmelo Simple Flight Ticket Booking System or the product name differs
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Verify the exact version number is 1.0Check the application version through readme.txt, version.php, or any metadata file in the web root; compare against the affected version = 1.0Affected if The installed version is not exactly 1.0 (other versions may not be affected)
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Confirm register.php exists and is accessibleLocate /register.php in the web directory structure and verify it is reachable via HTTP/HTTPS requestAffected if register.php does not exist in the expected location or is not accessible via web request
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Check if the Username parameter accepts unsanitized inputReview the source code of register.php to determine if the Username field is used in a raw SQL query without parameterized statements or input sanitizationAffected if The Username parameter is used in a dynamic SQL query without prepared statements or proper escaping (vulnerability is present)
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Assess network exposure of the registration endpointDetermine if the register.php endpoint is accessible from the internet or only from trusted internal networksAffected if register.php is publicly exposed without authentication requirements
The system is affected if it runs Simple Flight Ticket Booking System version 1.0 with register.php accessible and the Username parameter implemented using unsanitized dynamic SQL queries.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedReplace dynamic SQL queries with parameterized statements/prepared statements in /register.php for the Username field and all other user inputs. Implement input validation and consider deploying a WAF as a temporary compensating control.
- 1. Locate the /register.php file in the Simple Flight Ticket Booking System installation.
- 2. Identify all SQL queries in the file, particularly those using the Username parameter in INSERT or SELECT statements.
- 3. Replace dynamic SQL queries with prepared statements using PDO or mysqli. For example, change: $sql = "INSERT INTO users (username, ...) VALUES ('$username', ...)" to use parameterized queries like: $stmt = $pdo->prepare('INSERT INTO users (username, ...) VALUES (:username, ...)'); $stmt->execute([':username' => $username]);
- 4. Ensure the database connection uses PDO with emulated prepare statements disabled: $pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
- 5. Add input validation for the Username field to enforce length limits and allowed character patterns.
- 6. Apply the same remediation to any other files in the application that construct SQL queries from user input.
- 7. Test the registration functionality to confirm the fix works correctly.
- 8. Re-scan or retest for SQL injection vulnerabilities to verify remediation.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation3.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-3709 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-3709 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data