Security readout for executives and security teams
Plain-English summary
This is a medium-severity access control issue in the WordPress Nexter Blocks plugin, package the-plus-addons-for-block-editor, through version 4.5.4. An unauthenticated network attacker could access information that should have required authorization. Sources do not state active exploitation or business impact beyond limited confidentiality exposure.
Executive priority
Treat this as a moderate WordPress plugin exposure requiring routine but timely remediation. It does not currently justify emergency response based on the supplied evidence, but internet-facing WordPress sites using the affected plugin should be identified and updated according to vendor guidance.
Technical view
CVE-2025-54739 maps to CWE-862 Missing Authorization. The CVSS 3.1 vector AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N indicates remote reachability, low complexity, no privileges, no user interaction, unchanged scope, low confidentiality impact, and no integrity or availability impact. Affected product is POSIMYTH Nexter Blocks through 4.5.4.
Likely exposure
Exposure is limited to WordPress sites running POSIMYTH Nexter Blocks, package the-plus-addons-for-block-editor, version 4.5.4 or older. The source bundle does not identify affected endpoints, default configurations, or hosting constraints.
Exploitation context
The CVE is not listed as KEV in the supplied data, and no cited source states active exploitation. CVSS suggests an unauthenticated remote path may exist, but the sources do not provide endpoint detail or exploitation prerequisites beyond the access control weakness.
Researcher notes
The public data is sparse. It identifies a missing authorization issue and low confidentiality impact, but does not describe the vulnerable endpoint, data exposed, proof-of-concept availability, or fixed version. Avoid assumptions beyond the affected plugin range and CVSS properties.
Mitigation direction
- Inventory WordPress sites for the Nexter Blocks plugin and installed version.
- Prioritize sites running Nexter Blocks 4.5.4 or older for review.
- Check POSIMYTH, WordPress, and Patchstack guidance for fixed versions or vendor mitigations.
- Restrict unnecessary public access to WordPress administrative and plugin-related surfaces where feasible.
- Increase monitoring for unusual unauthenticated access to WordPress plugin endpoints.
Validation and detection
- Confirm whether the plugin package the-plus-addons-for-block-editor is installed.
- Record the installed Nexter Blocks version on each WordPress site.
- Compare installed versions against the affected range through 4.5.4.
- Review web access logs for unusual unauthenticated requests to plugin-related paths.
- Verify remediation status against vendor or Patchstack advisories before closing.
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-2025-54739 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
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:N/UI:N/S:U/C:L/I:N/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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.