CVE-2022-41789Network attack vector

Stored cross-site scripting via unsanitized page header

Published Nov 15, 2022 · Updated Apr 29, 2025

Cross-site scripting in BlueSpice 4 before 4.2.1 allows remote authenticated users to execute script in wiki pages through crafted default page-header content. The BlueSpiceDiscovery skin inserts editor-controlled header HTML into rendered pages without sanitizing it, allowing browser markup and script execution in viewers' sessions. Exploitation requires a logged-in account with edit permission and a victim viewing the affected wiki page; the documented impact is arbitrary HTML and script execution in that browser context.

CVSS severity5.4
Medium
EPSS probability0.27%
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 BlueSpice 4 before 4.2.1 allows remote authenticated users to execute script in wiki pages through crafted default page-header content. The BlueSpiceDiscovery skin inserts editor-controlled header HTML into rendered pages without sanitizing it, allowing browser markup and script execution in viewers' sessions. Exploitation requires a logged-in account with edit permission and a victim viewing the affected wiki page; the documented impact is arbitrary HTML and script execution in that browser context.

The record

CVE
CVE-2022-41789
Published
Nov 15, 2022
Updated
Apr 29, 2025
Vendor
Hallo Welt! GmbH
Product
BlueSpice
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 29, 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=4 <4.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Hallo Welt! GmbH · BlueSpiceversion=4 <4.2.1

Published CVSS scores

5.4NVDCVSS:3.1/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.

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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')
T1059.007Command and Scripting Interpreter: JavaScript

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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