How severe is CVE-2023-39507?

CVE-2023-39507 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-39507 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39507?

CVE-2023-39507 affects Recruit Rikunabi Next. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39507?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-39507 published?

CVE-2023-39507 was published on 2023-08-16 and last updated on 2026-06-17.

CVE-2023-39507

CVE-2023-39507 is a medium-severity vulnerability in Recruit Rikunabi Next with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Recruit Rikunabi Next
Published: 2023-08-16
Last modified: 2026-06-17

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.

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 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-39507 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39507?: CVE-2023-39507 affects Recruit Rikunabi Next. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39507?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-39507 published?: CVE-2023-39507 was published on 2023-08-16 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:recruit:rikunabi_next:*:*:*:*:*:android:*:*

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