What is CVE-2021-25025?

CVE-2021-25025 is a medium-severity vulnerability in Theeventscalendar Eventcalendar, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2022-01-17.

How severe is CVE-2021-25025?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2021-25025 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

CSRF in Theeventscalendar Eventcalendar

CVE-2021-25025

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

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2022-01-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (25.8th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Theeventscalendar Eventcalendar
Eventcalendar — versions 1.1.51

Weakness classification (CWE)

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/24fb4eb4-9fe1-4433-8844-8904eaf13c0e (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-25025?: CVE-2021-25025 is a medium-severity vulnerability in Theeventscalendar Eventcalendar, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2022-01-17.
How severe is CVE-2021-25025?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2021-25025 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.