Security readout for executives and security teams
Plain-English summary
This flaw let any logged-in WordPress user modify existing posts or pages built with Brizy. For a business site, that means low-privilege accounts could change public content, damage trust, or insert misleading material. The source bundle does not show CISA KEV listing or confirmed active exploitation.
Executive priority
Prioritize remediation for public-facing WordPress sites using Brizy, especially where non-admin users can log in. The issue is high risk because it affects public content integrity, but urgency is lower than internet-facing unauthenticated takeover flaws absent confirmed exploitation evidence.
Technical view
CVE-2021-38345 affects Brizy Page Builder versions up to 2.3.11, including a reintroduced issue after 1.0.126. Incorrect authorization checks allowed authenticated users reaching wp-admin endpoints to modify Brizy-created posts or pages. CVSS 3.1 is 7.1, with low privileges required and high integrity impact.
Likely exposure
Exposure is limited to WordPress sites running affected Brizy Page Builder versions and having at least one logged-in user account. Sites with many subscribers, customers, contributors, or weak account hygiene face higher practical risk.
Exploitation context
The bundle reports no KEV listing and provides no evidence of active exploitation. Exploitation requires an authenticated WordPress session, not anonymous access. The main impact is unauthorized content modification, with possible defacement, phishing content, or operational disruption.
Researcher notes
The CVE entry describes incorrect authorization checks, although the bundle lists CWE-79. Treat the authorization behavior as the core exposure. Evidence provided identifies affected version ranges and impact, but does not include exploit details, proof of active exploitation, or complete vendor remediation notes.
Mitigation direction
- Upgrade Brizy Page Builder beyond the affected version range.
- Check Brizy vendor guidance for the current fixed release.
- Remove or disable unnecessary low-privilege WordPress accounts.
- Limit wp-admin access where operationally feasible.
- Review Brizy-created pages for unauthorized changes.
Validation and detection
- Inventory WordPress sites using the Brizy Page Builder plugin.
- Confirm installed Brizy versions are not 2.3.11 or earlier affected releases.
- Review WordPress users with login access and their roles.
- Check recent changes to Brizy-created posts and pages.
- Monitor for unexpected content edits or suspicious admin activity.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2021-38345 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:N/I:H/A:L
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:L2.84.2Primary 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:N/I:H/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/blog/2021/10/multiple-vulnerabilities-in-brizy-page-builder-plugin-allow-site-takeover/CVE reference · x_refsource_MISC
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.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.