Strategic Overview
- Status
- Patched in 1.1.51
- Affected Plugin
- Event Calendar WD version
- Affected Version
<= 1.1.50- CVSS
- 4.3Medium
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2021-25025
At a glance
CVE-2021-25025 is a medium-severity Missing Authorization vulnerability in the Event Calendar WD version WordPress plugin, affecting versions <= 1.1.50. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). The issue is fixed in version 1.1.51; sites on affected versions should update now. Disclosed December 2021, reported by Krzysztof Zając.
Vulnerability Overview
The EventCalendar WordPress plugin before 1.1.51 does not have proper authorisation and CSRF checks in the add_calendar_event AJAX actions, allowing users with a role as low as subscriber to create events
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.
CWE-862: Missing Authorization
Reaching this weakness in Event Calendar WD version <= 1.1.50 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Event Calendar WD version the fix is 1.1.51: builds <= 1.1.50 are affected, anything from 1.1.51 onward is not.
Remediation
Update to version 1.1.51, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Event Calendar WD version 1.1.51 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in Event Calendar WD version
- 7.2Event Calendar <= 1.1.44 Cross-Site Scripting
- 6.4CVE-2017-2224: EventCalendar < 1.0.94 Cross-Site Scripting
CVE-2017-2224 - 6.1CVE-2021-25024: Event Calendar <= 1.1.50 Reflected XSS
CVE-2021-25024 - 5.4CVE-2018-16164: EventCalendar <= 1.1.21 Cross-Site Scripting
CVE-2018-16164 - 4.7EventCalendar <= 1.1.45 Cross-Site Scripting
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C