What is CVE-2023-31823?

CVE-2023-31823 is a high-severity vulnerability in Marui, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.5/10. Published 2023-07-13.

How severe is CVE-2023-31823?

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

Vulnerability in Marui

CVE-2023-31823

An issue found in Marui Co Marui Official app v.13.6.1 allows a remote attacker to gain access to sensitive information via the channel access token in the miniapp Marui Official Store function.

Published 2023-07-13 · last modified 2026-07-09.

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 (49.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.2% 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

Marui — versions 13.6.1

Weakness classification (CWE)

CWE-319 — Cleartext Transmission of Sensitive Information

References

af854a3a-2127-422b-91ae-364da2661108 (Product)
github.com/syz913/CVE-reports/blob/main/CVE-2023-31823.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-31823?: CVE-2023-31823 is a high-severity vulnerability in Marui, classified under Cleartext Transmission of Sensitive Information. CVSS score: 7.5/10. Published 2023-07-13.
How severe is CVE-2023-31823?: High severity. CVSS v3 base score is 7.5 out of 10.