CVE-2026-23547
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 · uneditedMissing Authorization vulnerability in cmsmasters CMSMasters Content Composer cmsmasters-content-composer allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects CMSMasters Content Composer: from n/a through <= 2.5.8.
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 confidenceThis is a Missing Authorization (Broken Access Control) vulnerability in the CMSMasters Content Composer WordPress plugin. The issue allows attackers to exploit incorrectly configured access control security levels, likely enabling unauthorized users to access administrative functions or perform actions beyond their privileges. The vulnerability affects all versions through 2.5.8.
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
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/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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Confirm plugin installationNavigate to WordPress admin dashboard > Plugins. Look for 'CMSMasters Content Composer' in the installed plugins list.Affected if The plugin appears in the installed plugins list.
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Identify installed versionIn the Plugins page, look for the version number displayed under the plugin name, or check the plugin header in /wp-content/plugins/cmsmasters-content-composer/cmsmasters-content-composer.php for the 'Version' field.Affected if The installed version is 2.5.8 or any earlier version (all versions through 2.5.8 are affected).
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Verify plugin is activeIn the Plugins page, confirm the plugin status shows 'Active'. Only active plugins can be exploited.Affected if The plugin shows as Active.
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Check for unauthorized admin function accessAs a low-privilege user (subscriber or contributor role), attempt to access the Content Composer editor or any admin AJAX endpoints used by the plugin. Inspect whether the server returns successful responses without returning a 401 Unauthorized or 403 Forbidden error.Affected if Low-privilege users can access administrative functions or composer features without proper capability checks.
Your environment is affected if the CMSMasters Content Composer plugin is installed, active, and running version 2.5.8 or earlier, especially if lower-privileged users can access admin or composer functionality without authorization barriers.
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 (capability checks and nonce verification) on all sensitive functions and admin actions within the plugin. Restrict access to composer functionality to authenticated users with appropriate privileges only.
- Consultation3.0 h
- Implementation8.0 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 $5,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-23547 — 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-2026-23547 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