What is CVE-2023-39042?

CVE-2023-39042 is a high-severity vulnerability in Lycorp Line Mini App, classified under Information Disclosure. CVSS score: 7.5/10. Published 2023-11-02.

How severe is CVE-2023-39042?

High severity. CVSS v3 base score is 7.5 out of 10.

Information disclosure in Lycorp Line Mini App

CVE-2023-39042

An information leak in Gyouza-newhushimi v13.6.1 allows attackers to obtain the channel access token and send crafted messages.

Vulnerability class: Information Disclosure

Published 2023-11-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.9th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Lycorp Line Mini App — versions 13.6.1

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

liff.line.me/1660693321-VmNyyXqO (Product)
github.com/syz913/CVE-reports/blob/main/CVE-2023-39042.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-39042?: CVE-2023-39042 is a high-severity vulnerability in Lycorp Line Mini App, classified under Information Disclosure. CVSS score: 7.5/10. Published 2023-11-02.
How severe is CVE-2023-39042?: High severity. CVSS v3 base score is 7.5 out of 10.