CVE-2022-4320: The WordPress Events Calendar WordPress plugin before 1.4.5 does not sanitize and escapes a parameter before o

Q: How do I fix CVE-2022-4320?

wordpress events calendar plugin: upgrade to 1.4.5. Exact commands for each OS are on this page.

Q: Is CVE-2022-4320 being exploited?

CVE-2022-4320 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-4320 affect?

CVE-2022-4320 affects wordpress events calendar plugin. Severity is medium (CVSS 6.1). 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 au

Q: How urgent is CVE-2022-4320?

Priority 41/100. Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2022-4320 is a medium-severity flaw (CVSS 6.1) affecting wordpress events calendar plugin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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).

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Published	2023-01-16
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: mhsoftware

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-01-16 16:15 UTCPublished CVE record published
2026-06-17 05:20 UTCUpdated Record last modified

mhsoftware wordpress events calendar plugin UPGRADE

Affected: < 1.4.5

Fixed in: 1.4.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wordpress-events-calendar-plugin || rpm -q wordpress-events-calendar-plugin || wordpress-events-calendar-plugin --version

2. UPGRADE to 1.4.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wordpress-events-calendar-plugin

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wordpress-events-calendar-plugin

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Nuclei scan template: WordPress Events Calendar <1.4.5 - Cross-Site Scripting

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-4320?

wordpress events calendar plugin: upgrade to 1.4.5. Exact commands for each OS are on this page.

Is CVE-2022-4320 being exploited?

CVE-2022-4320 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-4320 affect?

CVE-2022-4320 affects wordpress events calendar plugin. Severity is medium (CVSS 6.1). 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 au

How urgent is CVE-2022-4320?

Priority 41/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

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