CVE-2022-4522Network attack vector

Cross-site scripting via unrestricted theme resource paths

Published Dec 15, 2022 · Updated Apr 15, 2025

Cross-site scripting in CalendarXP 10.0.0 and 10.0.1 allows remote attackers to execute script in a user's browser via a crafted theme path. Calendar page templates pass theme, plug-in, and agenda path values directly into document.write-generated script source attributes, allowing nonrelative script references. Exploitation requires a user to load an affected calendar page where an attacker can influence the theme path, enabling script execution in that page's origin.

CVSS severity6.1
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in CalendarXP 10.0.0 and 10.0.1 allows remote attackers to execute script in a user's browser via a crafted theme path. Calendar page templates pass theme, plug-in, and agenda path values directly into document.write-generated script source attributes, allowing nonrelative script references. Exploitation requires a user to load an affected calendar page where an attacker can influence the theme path, enabling script execution in that page's origin.

The record

CVE
CVE-2022-4522
Published
Dec 15, 2022
Updated
Apr 15, 2025
Vendor
Victor Weng
Product
CalendarXP
Classifications
CWE-707, T1203
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2025Record 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=10.0.0
  2. Affected versionversion=10.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Victor Weng · CalendarXPversion=10.0.0; version=10.0.1

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.5VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-707Improper Neutralization
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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