CVE-2026-40847
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 low privileged remote attacker can exploit an unauthenticated SQL Injection vulnerability in the system_tag view 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 · moderate confidenceA SQL injection vulnerability exists in the system_tag view where improper neutralization of special elements in a SQL SELECT command allows an unauthenticated, low-privileged remote attacker to inject malicious SQL queries, resulting in total loss of confidentiality.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/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 system_tag view componentSearch your application codebase, routes, or web configuration files for references to 'system_tag' as a view, endpoint, controller, or route handler. Check both frontend and backend codebases.Affected if Your application contains a component, view, or endpoint named system_tag that handles requests
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Identify SQL query implementation in system_tagExamine the system_tag implementation code for any SELECT queries. Look for raw SQL execution, string concatenation building SQL queries, or dynamic query construction that incorporates user-supplied parameters.Affected if The system_tag code contains SELECT statements built with string concatenation or dynamic SQL without using parameterized queries or prepared statements
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Check user input handling in system_tagReview how the system_tag view processes incoming request parameters. Determine if URL parameters, form inputs, headers, or cookies are directly inserted into SQL queries without sanitization or parameterization.Affected if User-supplied input from requests is directly concatenated into SQL queries in the system_tag view without validation or escaping
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Verify access requirements for system_tagDetermine if the system_tag endpoint requires authentication by checking authentication decorators, middleware, session validation, or access control configurations for that route.Affected if The system_tag view is accessible to unauthenticated users or accepts requests without requiring valid authentication credentials
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Test for SQL injection presenceIf you have a testing environment, send requests to system_tag endpoints with SQL meta-characters (such as single quotes, UNION SELECT, OR 1=1) as parameter values and observe whether database errors appear or query logic is altered.Affected if Injecting SQL syntax characters into system_tag parameters produces unexpected database behavior or error messages revealing SQL structure
You are affected if your environment contains a system_tag view that processes user input through unparameterized SQL queries and is accessible to unauthenticated or low-privileged users.
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 (prepared statements) or proper input validation/sanitization for all user-supplied input in the system_tag view SQL SELECT statements to prevent SQL injection attacks.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-40847 — 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-2026-40847 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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- Version or environment caveats, and links to real fixes
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