CVE-2023-39376
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 · uneditedSiberianCMS - CWE-284 Improper Access Control Authorized user may disable a security feature over the network
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 confidenceSiberianCMS contains an improper access control vulnerability (CWE-284) where an authorized user can disable a security feature over the network. This indicates insufficient authorization controls on functionality that manages security settings, allowing a user with valid credentials to circumvent security protections.
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>= 4.0.0, < 4.20.44>= 5.0.0, < 5.0.4CVSS 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
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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 SiberianCMS versionLocate the version file or admin dashboard version indicator. Common locations include a VERSION file in the root directory, the admin panel footer, or the system info page.Affected if The installed version is 4.0.0 through 4.20.43, OR 5.0.0 through 5.0.3 (meaning it falls within < 4.20.44 or < 5.0.4)
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Confirm version falls within vulnerable rangeCompare your identified version against the affected ranges: 4.0.0 <= version < 4.20.44, or 5.0.0 <= version < 5.0.4Affected if Your version matches one of the affected ranges
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Locate security feature settingsAccess the CMS admin panel and navigate to security-related configuration areas. Look for toggles, switches, or settings that control security protections.Affected if Security feature settings are accessible and can be modified
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Test authorization boundariesLog in with a standard user account (non-admin) and attempt to access or modify security settings. Observe whether the application permits or denies the action.Affected if A non-administrator user can access or modify security feature settings
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Audit user role permissionsReview the user role configuration or database to determine what permissions are assigned to different user roles, specifically regarding security feature management.Affected if Roles other than administrators have permissions to toggle or disable security features
You are affected if your SiberianCMS version is 4.0.0-4.20.43 or 5.0.0-5.0.3 AND standard users can access or modify security feature settings without proper authorization controls.
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 · scoped4.20.445.0.4
Implement proper role-based access control (RBAC) to restrict security feature modification to only privileged administrators, and add authorization validation before allowing any security feature to be toggled or disabled.
SiberianCMS 4.20.44 or later (4.x branch), or 5.0.4 or later (5.x branch)
- 1. Backup the SiberianCMS database and all files
- 2. Review the SiberianCMS changelog for version 4.20.44 (or 5.0.4) to understand any required migration steps
- 3. Download the fixed version (4.20.44 or later for 4.x branch, 5.0.4 or later for 5.x branch) from the official SiberianCMS repository
- 4. Test the upgrade in a staging/non-production environment first
- 5. Install the upgrade following standard SiberianCMS upgrade procedures
- 6. Verify the fix by confirming the security feature cannot be disabled by authorized users without proper authorization
- 7. Deploy to production after successful validation
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation6.0 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 $3,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-39376 — 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-2023-39376 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