Security readout for executives and security teams
Plain-English summary
A low-privileged WordPress user could change or create site pages or posts through WP Quick FrontEnd Editor versions up to 5.5. This threatens website integrity and availability because content can be altered without proper authorization. The provided sources do not show confirmed active exploitation.
Executive priority
Prioritize remediation on any public or business-critical WordPress site using this plugin. The issue directly affects site content integrity and could support defacement, misinformation, or operational disruption, even without evidence of active exploitation.
Technical view
CVE-2021-4383 is a CWE-862 missing authorization issue in WP Quick FrontEnd Editor page-editing functionality. The supplied description says authenticated Subscriber+ users can edit or create any page or post. CVSS is 8.1 high, with network access, low complexity, low privileges, and high integrity and availability impact.
Likely exposure
WordPress sites running WP Quick FrontEnd Editor up to and including version 5.5 are the relevant exposure. Risk is higher on sites allowing public registration or with many subscriber-level accounts.
Exploitation context
The weakness requires an authenticated low-privileged account, not admin access. The bundle marks KEV as false, and no supplied source confirms active exploitation. Public details describe impact, but this analysis does not infer exploit activity beyond the sources.
Researcher notes
The source bundle describes versions up to 5.5 as vulnerable and cites missing capability checks. The affected metadata also includes inconsistent-looking version/default status fields, so validate against Wordfence, Nintechnet, and WordPress plugin records before final asset decisions.
Mitigation direction
- Inventory WordPress sites for WP Quick FrontEnd Editor and installed version.
- Disable or remove affected versions until vendor guidance confirms a fixed release.
- Restrict public registration and unnecessary subscriber accounts during assessment.
- Review recent page and post changes for unauthorized edits.
- Monitor WordPress, Wordfence, and vendor guidance for remediation status.
Validation and detection
- Confirm whether the plugin is installed and active on each WordPress site.
- Verify installed versions are not up to and including 5.5.
- Review content audit history for unexpected low-privileged edits.
- Check logs for page or post edit activity by subscriber-level users.
- In staging, confirm subscribers cannot access front-end editing actions.
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-2021-4383 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
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
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:N/I:H/A:H2.85.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f5492bff-cfd9-41ed-a59b-4445d5e83e86?source=cveCVE reference
- https://blog.nintechnet.com/multiple-vulnerabilities-in-wordpress-wp-quick-frontend-editor-plugin-unpatched/CVE reference
- https://wordpress.org/plugins/wp-quick-front-end-editor/#developersCVE reference
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.