CVE-2026-27388
Published: 05 March 2026
Summary
CVE-2026-27388 is a high-severity Missing Authorization (CWE-862) vulnerability. Its CVSS base score is 7.5 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 5.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requiring an access control policy ensures authorization checks are defined and applied for critical functions.
Reviews of access controls detect missing authorization checks on critical functions or resources.
Documenting permitted unauthenticated actions prevents missing authorization by making all exceptions explicit and subject to organizational review.
Requiring attribute association with information prevents authorization from being performed without necessary security or privacy context.
Mandating authorization prior to allowing remote connections addresses missing authorization for remote access.
Mandating authorization before wireless connections are allowed prevents missing authorization for wireless access.
The control requires authorization before allowing mobile device connections, directly mitigating missing authorization for system access.
Requiring approvals for account creation and specifying authorizations ensures authorization is not missing for system access.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Missing authorization (CWE-862) in public-facing WordPress plugin directly enables unauthenticated network exploitation for high-impact DoS via application abuse.
NVD Description
Missing Authorization vulnerability in designthemes DesignThemes Booking Manager designthemes-booking-manager allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects DesignThemes Booking Manager: from n/a through <= 2.0.
Deeper analysisAI
CVE-2026-27388 is a missing authorization vulnerability, mapped to CWE-862, in the DesignThemes Booking Manager WordPress plugin (designthemes-booking-manager). It enables exploitation of incorrectly configured access control security levels and affects all versions from n/a through 2.0 inclusive. The vulnerability carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H), highlighting its high severity with a primary impact on availability.
Unauthenticated attackers can exploit this issue over the network with low attack complexity and no user interaction. Exploitation results in high-impact denial of service, potentially disrupting site functionality without affecting confidentiality or integrity.
The Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/designthemes-booking-manager/vulnerability/wordpress-designthemes-booking-manager-plugin-2-0-broken-access-control-vulnerability?_s_id=cve documents the broken access control vulnerability in plugin version 2.0 and provides further details for mitigation.
Details
- CWE(s)