What is CVE-2023-39056?

CVE-2023-39056 is a medium-severity vulnerability in Coffee-Jumbo Project, classified under Exposure of Resource to Wrong Sphere. CVSS score: 6.5/10. Published 2023-09-18.

How severe is CVE-2023-39056?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Coffee-Jumbo Project

CVE-2023-39056

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

Published 2023-09-18 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (37.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.2% 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: 0.005 · change: +0.001

Affected products

Coffee-Jumbo Project — versions 13.6.1

Weakness classification (CWE)

CWE-668 — Exposure of Resource to Wrong Sphere

References

af854a3a-2127-422b-91ae-364da2661108 (Not Applicable)
github.com/syz913/CVE-reports/blob/main/CVE-2023-39056.md (Exploit)

Frequently asked questions

What is CVE-2023-39056?: CVE-2023-39056 is a medium-severity vulnerability in Coffee-Jumbo Project, classified under Exposure of Resource to Wrong Sphere. CVSS score: 6.5/10. Published 2023-09-18.
How severe is CVE-2023-39056?: Medium severity. CVSS v3 base score is 6.5 out of 10.