JAY Login & Register <= 2.4.01 — Authentication Bypass via Cookie
CVE-2025-14440Published · Updated Action summary
Affected: ≤2.4.01Update to 2.5.01 or newer
All remediation steps- Severity
- Critical9.8
- CVSS
- 9.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
JAY Login & Register jay-login-register
- Affected≤ 2.4.01
- Patched in2.5.01
Update to 2.5.01 or newer.
You are affected if you run ≤ 2.4.01. Version 2.5.01 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under JAY Login & Register.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 2.5.01, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch JAY Login & Register to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to kr0d.
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in JAY Login & Register
All 3| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High8.8 | Authenticated (Subscriber+) Privilege Escalation via jay_panel_ajax_update_profile ≤2.6.03Update to 2.6.04 | CVE-2025-15100 | |
| Critical9.8 | Unauthenticated Privilege Escalation via jay_login_register_ajax_create_final_user ≤2.6.03Update to 2.6.04 | CVE-2025-15027 |
- High8.8Authenticated (Subscriber+) Privilege Escalation via jay_panel_ajax_update_profile
≤2.6.03Update to 2.6.04
- Critical9.8Unauthenticated Privilege Escalation via jay_login_register_ajax_create_final_user
≤2.6.03Update to 2.6.04
Timeline
CVE published
Severity critical, CVSS 9.8
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.