CVE-2025-14440 | The JAY Login & Register plugin for WordPress is vulnerable … | CVSS 9.8 CRITICAL

Description

The JAY Login & Register plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 2.4.01. This is due to incorrect authentication checking in the 'jay_login_register_process_switch_back' function with the 'jay_login_register_process_switch_back' cookie value. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the user id.

Metadata

CVE ID: CVE-2025-14440
State: PUBLISHED
Assigner: Wordfence
Reserved: 2025-12-10 12:22 UTC
Published: 2025-12-13 04:31 UTC
Last updated: 2026-04-08 17:09 UTC
Primary CWE: CWE-565
CWE-565 Reliance on Cookies without Validation and Integrity…
Vendor / Product: jayarsiech / JAY Login & Register
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
jayarsiech	JAY Login & Register	—	0 ≤ 2.4.01

Weakness (CWE)

CWE	Source	Description
CWE-565	cna	CWE-565 Reliance on Cookies without Validation and Integrity Checking

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (3)