CVE-2026-51923
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 Insecure Direct Object Reference (IDOR) vulnerability exists in docuForm GmbH Client v.11.11c allowing a remote attacker to execute arbitrary code via the user settings component, and modify or retrieve sensitive data associated with other users’ accounts.
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 confidenceAn IDOR vulnerability in docuForm GmbH Client v.11.11c's user settings component allows attackers to bypass access controls and access/modify other users' settings, leading to arbitrary code execution capability and exposure of sensitive user data.
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
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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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Identify installed docuForm Client versionCheck the application's version information through its main executable, about dialog, or installation directory. Common locations: Help > About, or check the executable properties of the main client application.Affected if The installed version matches 11.11c or falls within the affected version range of docuForm GmbH Client.
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Locate user settings componentNavigate to or enumerate the user settings functionality within the docuForm Client application. Look for menu items such as 'Settings', 'User Settings', 'Preferences', or similar options accessible from the main interface.Affected if The user settings component is present and accessible within the application.
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Verify access control configurationInspect the application's configuration files for authorization settings related to user settings access. Look for files in the application data directory or config folder that define user permissions or access control lists.Affected if No server-side authorization validation is configured, or the configuration allows cross-user access to settings resources.
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Test user isolation in settings moduleIf you have access to multiple user accounts, attempt to access or modify one user's settings while authenticated as a different user. Check if the application enforces user-specific boundaries or allows direct object reference to other users' settings.Affected if The application allows access to or modification of another user's settings without proper ownership validation, indicating the IDOR vulnerability is present.
You are affected if the docuForm Client version is 11.11c or within the affected range AND the user settings component is accessible without proper user ownership validation.
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 proper authorization checks validating user identity and ownership before allowing access to any user settings or resources; enforce server-side validation of user permissions for all operations.
- Consultation6.0 h
- Implementation16.0 h
- Testing12.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $11,136.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-51923 — 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-2026-51923 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
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