Security readout for executives and security teams
Plain-English summary
CVE-2026-27389 is a critical account takeover issue in the WordPress WeDesignTech Ultimate Booking Addon plugin through version 1.0.1. An unauthenticated attacker may bypass authentication and abuse accounts. For businesses, this could mean loss of site control, data exposure, content changes, or service disruption if the plugin is installed.
Executive priority
Treat as urgent for any WordPress site using this plugin. The issue can enable account takeover without login, and business impact could be severe. If the plugin is absent, priority is low after validation.
Technical view
The CVE describes CWE-288, Authentication Bypass Using an Alternate Path or Channel, in designthemes WeDesignTech Ultimate Booking Addon package wedesigntech-ultimate-booking-addon, affecting versions through 1.0.1. CVSS 3.1 is 9.8: network exploitable, low complexity, no privileges, no user interaction, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress sites with the WeDesignTech Ultimate Booking Addon plugin installed at version 1.0.1 or earlier. The provided sources do not identify hosting conditions, dependent themes, or whether the plugin is publicly downloadable.
Exploitation context
The CVE record rates this as remotely exploitable without authentication or user interaction. The source bundle does not show CISA KEV listing or cite active exploitation. No public exploit details are provided in the supplied sources.
Researcher notes
Evidence is limited to the CVE data and Patchstack database reference. The affected range is stated as through 1.0.1, but the bundle does not name a fixed version, workaround, exploit publication, or active exploitation. Validate findings against live vendor or Patchstack updates before closure.
Mitigation direction
- Inventory WordPress sites for the WeDesignTech Ultimate Booking Addon plugin.
- Identify installed plugin versions and flag versions 1.0.1 or earlier.
- Check vendor and Patchstack guidance for an official fixed release or workaround.
- Disable or remove the plugin where it is not business-critical.
- Restrict WordPress administrative access and review privileged accounts.
Validation and detection
- Confirm whether wedesigntech-ultimate-booking-addon is installed on each WordPress site.
- Record plugin version and compare against affected versions through 1.0.1.
- Review WordPress user accounts for unexpected administrators or role changes.
- Check authentication and account-management logs for suspicious activity.
- Monitor CVE and Patchstack pages 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-288: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-27389 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Authentication Bypass Using an Alternate Path or Channel
Authentication Bypass Using an Alternate Path or Channel represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.