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 web requests that are executed in the context of an authenticated administrator’s browser, leading to unauthorized configuration changes, including enabling services or modifying system settings.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (6.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
- Nexxt Solutions Nebula 300+ — versions <= 12.01.01.37
- Nexxtsolutions Nebula300plus
- Nexxtsolutions Nebula300plus Firmware
Weakness classification (CWE)
References
- Official product page (Product, third-party-advisory)
- Firmware download (Product, third-party-advisory)
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.