CVE-2026-31848
Critical · 9.8CVSS
9.8
EPSS
0.5%
Published
Mar 23, 2026
CISA due date
—
The record
Nexxt Solutions Nebula 300+ firmware through version 12.01.01.37 uses the ecos_pw cookie for authentication, which contains Base64-encoded credential data combined with a static suffix. Because the encoding is reversible and lacks integrity protection, an attacker can reconstruct or forge a valid cookie value without proper authentication. This allows unauthorized administrative access to protected endpoints.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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