CVE-2023-39731

MEDIUMNVD 5.35.3—

5.3

The leakage of the client secret in Kaibutsunosato v13.6.1 allows attackers to obtain the channel access token and send crafted broadcast messages.

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 40.4%
KEV: Not listed

Published

October 20, 2023

Last Modified

November 21, 2024

References (4)

cve@mitrehttps://github.com/syz913/CVE-reports/blob/main/CVE-2023-39731.md
cve@mitrehttps://liff.line.me/1657662489-pwEQNzJ4
af854a3a-2127-422b-91ae-364da2661108https://github.com/syz913/CVE-reports/blob/main/CVE-2023-39731.md
af854a3a-2127-422b-91ae-364da2661108https://liff.line.me/1657662489-pwEQNzJ4

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-284Improper Access Control

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

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Frequently asked(5)

What is CVE-2023-39731?

CVE-2023-39731 is a medium vulnerability published on October 20, 2023. The leakage of the client secret in Kaibutsunosato v13.6.1 allows attackers to obtain the channel access token and send crafted broadcast messages.

When was CVE-2023-39731 disclosed?

CVE-2023-39731 was first published in the National Vulnerability Database on October 20, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-39731 actively exploited?

CVE-2023-39731 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 40.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-39731?

CVE-2023-39731 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2023-39731?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-39731, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2023-39731

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-39731?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (4)

Frequently asked(5)

Related CVEs(same CWE)