Security readout for executives and security teams
Plain-English summary
CVE-2026-28038 is a broken access control issue in the WordPress Ultimate Addons for WPBakery Page Builder plugin. An authenticated user could potentially perform actions they should not be allowed to perform. The main business concern is unauthorized content or configuration changes on affected WordPress sites using plugin versions up to 3.21.1.
Executive priority
Prioritize remediation for public WordPress sites that allow contributor, customer, subscriber, or other non-admin logins. This is not marked as actively exploited in the provided sources, but it can affect site integrity and should be handled in normal vulnerability remediation cycles with urgency based on user exposure.
Technical view
The CVE describes missing authorization in Brainstorm_Force Ultimate Addons for WPBakery Page Builder, package ultimate_vc_addons. It is scored CVSS 6.5 with network access, low attack complexity, low privileges required, no user interaction, and high integrity impact. The listed weakness is CWE-862. Affected versions are described as through 3.21.1.
Likely exposure
Exposure is limited to WordPress sites with Ultimate Addons for WPBakery Page Builder installed at version 3.21.1 or earlier. The CVSS vector indicates exploitation requires an authenticated account, reducing broad internet exposure but increasing risk on sites with many users, contributors, customers, or weak account governance.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. PatchStack has a vulnerability database entry, but the provided sources do not include exploit details. Treat this as a meaningful integrity risk, especially where low-privileged WordPress accounts exist.
Researcher notes
Evidence is limited to the CVE record and PatchStack entry. The affected range is stated as through 3.21.1, while the structured affected data is sparse. No fixed version, workaround, or exploit confirmation is provided in the source bundle. Validate against vendor advisories before making remediation claims.
Mitigation direction
- Inventory WordPress sites for the ultimate_vc_addons plugin.
- Identify plugin versions at or below 3.21.1.
- Check Brainstorm Force and PatchStack guidance for a fixed version or workaround.
- Update the plugin if a vendor-supported fixed release is available.
- Limit WordPress accounts to necessary roles only.
- Remove unused or untrusted WordPress user accounts.
Validation and detection
- Confirm whether Ultimate Addons for WPBakery Page Builder is installed.
- Record the installed plugin version for each WordPress site.
- Flag any instance running version 3.21.1 or earlier.
- Review recent administrative or content changes for unauthorized activity.
- Verify user roles follow least-privilege expectations.
- Monitor vendor advisories for updated remediation details.
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-2026-28038 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
- 6.5 (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: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:N/I:H/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
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.