CVE-2022-3073Network attack vector

Session hijacking via URL JavaScript injection

Published Dec 14, 2022 · Updated Apr 17, 2025

Cross-site scripting in Quanos SCHEMA ST4 example templates allows remote attackers to execute JavaScript through a crafted URL. In Bootstrap 2019 1 through 2 and Bootstrap 2021, 2022, and 2022 SP1 1, files ending in -schema.js permit URL-based injection; public sources do not identify the parameter or faulty operation. A logged-in user must follow the malicious link; the code can act in that browser session, expose sensitive data, or hijack same-environment service sessions.

CVSS severity6.1
Medium
EPSS probability0.45%
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 Quanos SCHEMA ST4 example templates allows remote attackers to execute JavaScript through a crafted URL. In Bootstrap 2019 1 through 2 and Bootstrap 2021, 2022, and 2022 SP1 1, files ending in -schema.js permit URL-based injection; public sources do not identify the parameter or faulty operation. A logged-in user must follow the malicious link; the code can act in that browser session, expose sensitive data, or hijack same-environment service sessions.

The record

CVE
CVE-2022-3073
Published
Dec 14, 2022
Updated
Apr 17, 2025
Vendor
Quanos Solutions GmbH
Product
SCHEMA ST4 example web templates
Classifications
CWE-79, CAPEC-63, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 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=1
  2. Affected versionversion=1 <=2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Quanos Solutions GmbH · SCHEMA ST4 example web templatesversion=1; version=1 <=2

Published CVSS scores

6.1CERT VDECVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-63Cross-Site Scripting (XSS)
T1204.001Malicious Link

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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