CVE-2022-4320: WordPress Events Calendar Plugin < 1.4.5 - Multiple Reflected XSS

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-01-16 · updated 2026-06-17

Description

The WordPress Events Calendar WordPress plugin before 1.4.5 does not sanitize and escapes a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against both unauthenticated and authenticated users (such as high-privilege ones like admin).

Affected products

WordPress Events Calendar Plugin: before 1.4.5 — fixed in 1.4.5

How to fix

Upgrade to a fixed version: WordPress Events Calendar Plugin 1.4.5. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/f1244c57-d886-4a6e-8cdb-18404e8c153c
https://wpscan.com/vulnerability/f1244c57-d886-4a6e-8cdb-18404e8c153c

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