CVE-2022-0364Public exploitNetwork attack vector

Contributor-level stored XSS via Hourly Schedule fields

Published Mar 21, 2022 · Updated Aug 2, 2024

Stored XSS in Webnus Modern Events Calendar Lite before 6.4.0 allows remote authenticated users to run script through event schedules. Hourly Schedule title, from, to, and description fields accept contributor-supplied markup without sanitizing it before storage or escaping it during event preview, display, or later editing. Contributor access is required, and viewing, previewing, or revisiting the crafted event executes the stored script in the affected user's browser context.

CVSS severity5.4
Medium
EPSS probability69.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Webnus Modern Events Calendar Lite before 6.4.0 allows remote authenticated users to run script through event schedules. Hourly Schedule title, from, to, and description fields accept contributor-supplied markup without sanitizing it before storage or escaping it during event preview, display, or later editing. Contributor access is required, and viewing, previewing, or revisiting the crafted event executes the stored script in the affected user's browser context.

The record

CVE
CVE-2022-0364
Published
Mar 21, 2022
Updated
Aug 2, 2024
Vendor
Webnus
Product
Modern Events Calendar Lite
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 21, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.4.0 <6.4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Webnus · Modern Events Calendar Liteversion=6.4.0 <6.4.0

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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