CVE-2026-24380
Published: 22 January 2026
Summary
CVE-2026-24380 is a medium-severity Missing Authorization (CWE-862) vulnerability. Its CVSS base score is 5.3 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 8.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 AC-3 (Access Enforcement) and AC-14 (Permitted Actions Without Identification or Authentication).
Deeper analysis
CVE-2026-24380 is a missing authorization vulnerability (CWE-862) in the Metagauss EventPrime WordPress plugin, specifically the eventprime-event-calendar-management component. It allows exploitation of incorrectly configured access control security levels and affects all versions of EventPrime up to and including 4.2.8.0. The vulnerability received a CVSS v3.1 base score of 5.3 (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N), indicating medium severity with low-impact confidentiality exposure over the network.
Unauthenticated attackers can exploit this vulnerability remotely with low complexity and no user interaction required. Successful exploitation enables access to low-confidentiality data, such as unauthorized viewing of sensitive event calendar management information, without impacting integrity or availability.
The Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/eventprime-event-calendar-management/vulnerability/wordpress-eventprime-plugin-4-2-8-0-broken-access-control-vulnerability?_s_id=cve documents the broken access control issue in EventPrime 4.2.8.0 and provides details on the vulnerability for WordPress plugin users.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-3831
Vulnerability details
Missing Authorization vulnerability in Metagauss EventPrime eventprime-event-calendar-management allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects EventPrime: from n/a through <= 4.2.8.0.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Missing authorization (CWE-862) in public-facing WordPress plugin directly enables remote unauthenticated exploitation for data access, mapping to T1190.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly enforces approved authorizations on EventPrime plugin functions, blocking the missing-authorization flaw that lets unauthenticated users view restricted calendar data.
Limits privileges assigned to unauthenticated and low-privilege roles in the plugin, reducing the impact of the incorrectly configured access-control levels.
Explicitly defines and restricts actions permitted without identification or authentication, directly addressing the plugin's exposure of sensitive event-management information to anonymous users.