CVE-2022-30533Network attack vector

Contributor-level stored script execution

Published Jun 16, 2022 · Updated Aug 3, 2024

Stored cross-site scripting in Webnus Modern Events Calendar Lite before 6.3.0 allows remote authenticated users to inject scripts. The published advisory does not identify the affected parameter or code path; it states only that injected script is stored and runs in a visitor's browser. Contributor-level access is required, and execution occurs when another user opens an affected page, exposing that browser session to script actions.

CVSS severity5.4
Medium
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Webnus Modern Events Calendar Lite before 6.3.0 allows remote authenticated users to inject scripts. The published advisory does not identify the affected parameter or code path; it states only that injected script is stored and runs in a visitor's browser. Contributor-level access is required, and execution occurs when another user opens an affected page, exposing that browser session to script actions.

The record

CVE
CVE-2022-30533
Published
Jun 16, 2022
Updated
Aug 3, 2024
Vendor
Webnus
Product
Modern Events Calendar Lite
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=versions prior to 6.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Webnus · Modern Events Calendar Liteversion=versions prior to 6.3.0

Published CVSS scores

4.0JPCERT/CCAV:N/AC:L/Au:S/C:N/I:P/A:N
5.4JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:L/UI:R/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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