CVE-2026-40816
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 · uneditedAn unauthenticated remote attacker can exploit an unauthenticated SQL Injection vulnerability in the mb24alarm.php files _mb24confi_getTagAlarm function due to improper neutralization of special elements in a SQL SELECT command. This can result in a total loss of confidentiality.
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 confidenceAn unauthenticated SQL Injection vulnerability exists in the mb24alarm.php file within the _mb24confi_getTagAlarm function. The vulnerability stems from improper neutralization of special elements in a SQL SELECT command, allowing attackers to inject malicious SQL queries without authentication.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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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Locate the vulnerable PHP fileSearch the web server document root for the file 'mb24alarm.php' - check common paths like /var/www/html/, /www/, or the application's web root directory. Use: find /var/www -name mb24alarm.php 2>/dev/nullAffected if The file mb24alarm.php exists in the web-accessible directory tree, indicating the affected component is present
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Verify the vulnerable function existsOpen mb24alarm.php and search for the function definition '_mb24confi_getTagAlarm'. Examine if this function constructs SQL queries using string concatenation rather than prepared statementsAffected if The function _mb24confi_getTagAlarm is found and contains SQL query construction that appears to use unsanitized user input
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Check unauthenticated access exposureConfirm the mb24alarm.php endpoint is accessible without authentication. Test by making an HTTP request to the file URL without providing any credentials or session cookiesAffected if The mb24alarm.php file can be accessed via HTTP/HTTPS without any authentication, allowing unauthenticated attackers to reach the vulnerable code
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Determine application versionCheck the application's version by inspecting version files, headers, or the main index.php. Common locations include VERSION file, config files, or the web interface footerAffected if The installed version falls within any affected version range (compare against vendor release notes for CVE-2026-40816)
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Inspect database query patternsReview the _mb24confi_getTagAlarm function for direct interpolation of request parameters ($_GET, $_POST, $_REQUEST) into SQL strings without using parameterized queries or input sanitization functionsAffected if User-supplied input from request parameters is directly concatenated into SQL SELECT statements without proper escaping or prepared statement usage
The environment is affected if mb24alarm.php with the _mb4confi_getTagAlarm function is present, accessible without authentication, and contains SQL queries built from unsanitized user input.
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.
From vendor dataImplement parameterized queries or prepared statements to properly neutralize special characters in user input before constructing SQL SELECT commands. Apply input validation and least-privilege database accounts to limit the impact of successful exploitation.
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,832.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-40816 — 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-2026-40816 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