CVE-2026-40840
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 VerifyCreateLicences 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 VerifyCreateLicences function due to improper neutralization of special elements in SQL SELECT commands. A low-privileged remote attacker can exploit this to read sensitive data from the database, 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 VerifyCreateLicences function in your codebaseSearch your application source code or binary files for the string 'VerifyCreateLicences' - check both frontend and backend components, including any shared libraries or DLLs that may contain this functionAffected if This function exists in your deployed software version
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Verify if the function is exposed as a network-accessible endpointReview your web server, API gateway, or service configuration files to determine if VerifyCreateLicences is mapped to a URL route, web service endpoint, or API handler that accepts incoming network requestsAffected if The function is exposed over the network (HTTP, REST, SOAP, or similar protocol)
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Confirm the function accepts user-supplied inputExamine the function signature and code to identify parameters that accept external input (query parameters, form fields, JSON body fields, headers, or cookies)Affected if The function processes any input that could be controlled by an unauthenticated remote attacker
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Inspect SQL query construction in the functionReview the function source code or decompiled code to identify SELECT queries. Check whether user-supplied input is concatenated directly into SQL strings without using parameterized queries, prepared statements, or input sanitizationAffected if The function builds SQL SELECT queries by concatenating or interpolating raw user input into the query string
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Check if authentication is enforced on the exposed endpointReview your access control configuration, middleware, or authentication layer to verify whether requests to the VerifyCreateLicences endpoint require valid authentication credentials before processingAffected if The endpoint can be accessed without any authentication (anonymous access allowed)
You are affected if your software contains the VerifyCreateLicences function, it is network-accessible without authentication, and it constructs SQL SELECT queries using 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 dataReplace dynamic SQL queries with parameterized queries or prepared statements in the VerifyCreateLicences function to properly neutralize special characters and prevent SQL injection.
- Consultation2.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-40840 — 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-2026-40840 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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