What is CVE-2023-43992?

CVE-2023-43992 is a medium-severity vulnerability in Linecorp Line, classified under Information Disclosure. CVSS score: 5.4/10. Published 2024-01-24.

How severe is CVE-2023-43992?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2023-43992 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Information disclosure in Linecorp Line

CVE-2023-43992

An issue in STOCKMAN GROUP mini-app on Line v13.6.1 allows attackers to send crafted malicious notifications via leakage of the channel access token.

Vulnerability class: Information Disclosure

Published 2024-01-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (27.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Linecorp Line — versions 13.6.1

Weakness classification (CWE)

CWE-200 — Information Disclosure

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

github.com/syz913/CVE-reports/blob/main/CVE-2023-43992.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-43992?: CVE-2023-43992 is a medium-severity vulnerability in Linecorp Line, classified under Information Disclosure. CVSS score: 5.4/10. Published 2024-01-24.
How severe is CVE-2023-43992?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2023-43992 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.