CVE-2026-47156

critical

Description

The vulnerability exists due to flawed login logic in the SOAP API's mci_check_login() function. The code improperly evaluates client-supplied data by validating a user's own session cookie string against an entirely separate target username provided in the SOAP request. This logic error allows an attacker to supply their own valid cookie_string along with a target username (such as administrator) to gain complete unauthenticated access and escalate privileges.

Details

Source: Mitre, NVD

Published: 2026-07-23

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 9.3

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