{"id":"CVE-2023-39737","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-39737","generatedAt":"2026-10-27T23:56:30.176Z","title":"The leakage of the client secret in Matsuya Line 13.6.1 allows attackers to obtain the channel access token and send crafted broadcast messages.","description":"The leakage of the client secret in Matsuya Line 13.6.1 allows attackers to obtain the channel access token and send crafted broadcast messages.","published":"2023-10-25T18:17:29.000Z","lastModified":"2026-06-17T06:12:50.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":8.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N"},"cwe":["CWE-200"],"affected":["linecorp/matsuya"],"epss":{"score":0.00719,"percentile":0.5362,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.72%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/syz913/CVE-reports/blob/main/CVE-2023-39737.md","tags":["Exploit"],"source":"cve@mitre.org"},{"url":"https://liff.line.me/1657535522-JD5Q5Yp1","tags":["Product"],"source":"cve@mitre.org"},{"url":"https://github.com/syz913/CVE-reports/blob/main/CVE-2023-39737.md","tags":["Exploit"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://liff.line.me/1657535522-JD5Q5Yp1","tags":["Product"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-39737","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}