CWE-306Base27 in KEV

Missing Authentication for Critical Function

Draft in the CWE catalog · 1,877 CVEs mapped

1,877
CVEs mapped
27
In KEV
8.6
Median CVSS
What it is

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Recent examples
9.3cvss
CVE-2026-16876

An authentication bypass vulnerability exists in the WebGUI of Series UNIVERGE IX-R/IX-V

An authentication bypass vulnerability exists in the WebGUI of Series UNIVERGE IX-R/IX-V. A user could bypass authentication and execute arbitrary CLI commands by tampering with WebGUI messages and sending them to the device via internet.

CRITICALno explanation yet
epss
7.5cvss
CVE-2026-86259

CVE-2026-86259 - HIGH Severity Vulnerability

OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds, allowing unauthenticated attackers to reach cloud instance metadata services. Attackers can supply arbitrary provider URLs via the x-base-url header or baseUrl parameter to access sensitive cloud credentials and metadata.

HIGHno explanation yet
epss
8.1cvss
CVE-2026-86242

CVE-2026-86242 - HIGH Severity Vulnerability

Bifrost HTTP transport before 2.0.0 accepts an enabled custom plugin whose path is an HTTP URL through unauthenticated POST /api/plugins when management authentication is disabled (the default, governance.auth_config.is_enabled=false). The shared-object loader treats an http-prefixed path as a download URL, writes the body to a temporary .so, and passes it to Go's plugin.Open. After a successful open, optional Init runs immediately with the supplied config as the Bifrost process user. On documented dynamically linked builds (DYNAMIC=1 / no static-link flags), which the vendor requires for custom Go plugins, plugin.Open is expected to succeed and this is unauthenticated remote code execution. On the published statically linked Docker image, plugin.Open fails with Dynamic loading not supported, so that build class is only server-side request forgery. Attack complexity is High because the attacker cannot force RCE on the default static image and a loadable plugin must match the host Go version, OS, architecture, and linkage. The 1.6.x HTTP transport line through 1.6.11 does not contain the fix.

HIGHno explanation yet
epss
The record
Technical detail
CWE ID
CWE-306
Abstraction
Base
Structure
Simple
Status
Draft
References (9)