CVE-2022-3893Network attack vector

Admin HTML injection via custom menu

Published Nov 15, 2022 · Updated Apr 29, 2025

Cross-site scripting in BlueSpiceCustomMenu in BlueSpice 4 before 4.2.1 allows authenticated administrators to inject arbitrary HTML. The extension stores administrator-controlled menu markup and renders it in custom navigation without sufficient output neutralization, enabling script-capable content to execute in viewers' browser sessions. The attack requires an authenticated account with administrative permissions and user interaction with the affected navigation; impact is limited to browser-side confidentiality and integrity effects described by the published record.

CVSS severity4.8
Medium
EPSS probability0.28%
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 BlueSpiceCustomMenu in BlueSpice 4 before 4.2.1 allows authenticated administrators to inject arbitrary HTML. The extension stores administrator-controlled menu markup and renders it in custom navigation without sufficient output neutralization, enabling script-capable content to execute in viewers' browser sessions. The attack requires an authenticated account with administrative permissions and user interaction with the affected navigation; impact is limited to browser-side confidentiality and integrity effects described by the published record.

The record

CVE
CVE-2022-3893
Published
Nov 15, 2022
Updated
Apr 29, 2025
Vendor
Hallo Welt! GmbH
Product
BlueSpice
Classifications
CWE-79, T1189
Attack vector
network
Privileges
admin

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 privilegesadmin

What is affected?

Hallo Welt! GmbH · BlueSpiceversion=4 <4.2.1

Published CVSS scores

2.3Hallo Welt! GmbHCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
4.8NVDCVSS:3.1/AV:N/AC:L/PR:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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