Security readout for executives and security teams
Plain-English summary
CVE-2026-23547 is a high-severity access-control flaw in the WordPress CMSMasters Content Composer plugin through version 2.5.8. A logged-in attacker may be able to reach functionality or data they should not access. The main business concern is potential confidentiality impact on affected WordPress sites.
Executive priority
Treat as a near-term remediation item for WordPress environments using this plugin, especially customer-facing sites with user registration. It is not currently supported as actively exploited by the provided sources, but the confidentiality impact and low attack complexity justify prompt inventory and remediation tracking.
Technical view
The CVE describes missing authorization in cmsmasters-content-composer, mapped to CWE-862. CVSS 3.1 is 7.1: network-accessible, low complexity, low privileges required, no user interaction, with high confidentiality and low integrity impact. Sources identify affected versions through 2.5.8.
Likely exposure
Exposure is likely limited to WordPress sites with CMSMasters Content Composer installed at version 2.5.8 or earlier. Exploitation requires at least a low-privileged authenticated account, reducing anonymous internet risk but increasing concern for sites with open registration, many users, or weak account governance.
Exploitation context
The provided sources do not state active exploitation, and the CVE is not marked KEV. The issue is remotely reachable and low complexity, but requires login credentials. No public exploit details are included in the provided source bundle.
Researcher notes
Key evidence is limited to the CVE record and Patchstack reference. The record gives the weakness class, CVSS vector, and affected range through 2.5.8, but does not provide exploit specifics or a named fixed version in the supplied data. Avoid assuming unauthenticated impact; CVSS indicates PR:L.
Mitigation direction
- Inventory WordPress sites for CMSMasters Content Composer and record installed versions.
- Prioritize sites running CMSMasters Content Composer 2.5.8 or earlier.
- Check the vendor and Patchstack entry for patched version or official mitigation guidance.
- Limit low-privileged account creation and remove unnecessary WordPress user accounts.
- Disable the plugin where it is not business-critical until remediated.
Validation and detection
- Confirm whether cmsmasters-content-composer is installed on each WordPress site.
- Verify the plugin version is newer than the affected range, if a fixed version is available.
- Review WordPress user roles for unnecessary low-privileged accounts.
- Check application logs for unusual authenticated access to plugin-related functionality.
- Document sites where no vendor fix is yet confirmed.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-862: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-23547 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N2.84.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.