title: Authentication and extension bypass in Faye
description: Faye (NPM, RubyGem) versions greater than 0.5.0 and before 1.0.4, 1.1.3 and 1.2.5, has the potential for authentication bypass in the extension system. The vulnerability allows any client to bypass checks put in place by server-side extensions, by appending extra segments to the message channel. It is patched in versions 1.0.4, 1.1.3 and 1.2.5.
problem types: CWE-287: Improper Authentication
affected:
{
product: Faye
vendor: faye
versions:
status: affected, version: >= 0.5.0, < 1.0.4
status: affected, version: >= 1.1.0, < 1.1.3
status: affected, version: >= 1.2.0, < 1.2.5
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 8.5
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: LOW
privilegesRequired: LOW
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
version: 3.1
]