CVE-2023-39507

Name: CVE-2023-39507
Creator: NVD / NIST
Published: 2023-08-16T09:15:11.793+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.32%

Last modified Jun 17, 2026

CVE-2023-39507 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.32%

24.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Recruit	Rikunabi Next	< 11.5.0

References

https://jvn.jp/en/jp/JVN84820712/Third Party Advisory
https://jvn.jp/en/jp/JVN84820712/Third Party Advisory

Timeline

Published: Aug 16, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39507?

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.

How severe is CVE-2023-39507?

CVE-2023-39507 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39507?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-39507?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST