What is CVE-2026-31849?

CVE-2026-31849 is a medium-severity vulnerability in Nexxt Solutions Nebula 300+, classified under Cross-Site Request Forgery (CSRF). CVSS score: 6.5/10. Published 2026-03-23.

How severe is CVE-2026-31849?

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

CSRF in Nexxt Solutions Nebula 300+

CVE-2026-31849

Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-changing endpoints such as /goform/setSysTools and other administrative interfaces. As a result, an attacker can craft malicious…

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.000 (5.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Nexxt Solutions Nebula 300+ — versions <= 12.01.01.37
Nexxtsolutions Nebula300plus
Nexxtsolutions Nebula300plus_firmware

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

Official product page (Product)
Firmware download (Product)

Frequently asked questions

What is CVE-2026-31849?: CVE-2026-31849 is a medium-severity vulnerability in Nexxt Solutions Nebula 300+, classified under Cross-Site Request Forgery (CSRF). CVSS score: 6.5/10. Published 2026-03-23.
How severe is CVE-2026-31849?: Medium severity. CVSS v3 base score is 6.5 out of 10.