What is CVE-2023-31826?

CVE-2023-31826 is a high-severity vulnerability in Skyscreamer Nevado Jms, classified under Missing Authorization. CVSS score: 7.8/10. Published 2023-05-23.

How severe is CVE-2023-31826?

High severity. CVSS v3 base score is 7.8 out of 10.

Auth bypass in Skyscreamer Nevado Jms

CVE-2023-31826

Skyscreamer Open Source Nevado JMS v1.3.2 does not perform security checks when receiving messages. This allows attackers to execute arbitrary commands via supplying crafted data.

Vulnerability class: Broken Access Control

Published 2023-05-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (22.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Skyscreamer Nevado Jms — versions 1.3.2

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

nevado.skyscreamer.org/ (Product)
github.com/skyscreamer/nevado/releases (Release Notes)
novysodope.github.io/2023/04/01/95/ (Exploit, Third Party Advisory)
github.com/skyscreamer/nevado/issues/121 (Issue Tracking)

Frequently asked questions

What is CVE-2023-31826?: CVE-2023-31826 is a high-severity vulnerability in Skyscreamer Nevado Jms, classified under Missing Authorization. CVSS score: 7.8/10. Published 2023-05-23.
How severe is CVE-2023-31826?: High severity. CVSS v3 base score is 7.8 out of 10.