CVE-2026-31849 PUBLISHED

Missing CSRF protection on state-changing endpoints in Nexxt Nebula 300+

Assigner: TuranSec
Reserved: 09.03.2026 Published: 23.03.2026 Updated: 23.03.2026

Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 does not implement CSRF protections on state-changing administrative endpoints. A remote attacker can induce an authenticated administrator to submit crafted requests that modify device settings, including security-relevant configuration, without the administrator's intent.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 7.2

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	Nexxt Solutions
Product	Nebula 300+
Versions	Default: unaffected Version <= 12.01.01.37 is affected

Credits

Angel Barre (call4pwn) finder

References

Problem Types

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

Impacts

A remote attacker can cause an authenticated administrator's browser to send forged state-changing requests, resulting in unauthorized configuration changes.