Simple JWT Login: Authentication bypass
The export requires the Subscriber role or higher. An attacker can bypass an intended authentication check. The bypassed mechanism, resulting session or access level, and affected endpoint are undisclosed; a specific account-takeover path is not established. The supplied vector reports high confidentiality impact, high integrity impact, high availability impact. The vector requires no victim interaction. Affected versions: 4.0.0. No fixed release is confirmed. The checked official release is 3.6.8; it does not establish a fixed version for this CVE.
- Component
- Simple JWT Login
- Plugin slug
simple-jwt-login- Affected
- 4.0.0
- Safe version
- See mitigation notes
- Published
- Oct 06, 2026
This CVE was published Oct 06, 2026 and is one of 6 known issues for this plugin.
Update, patch or deactivate.
No fixed release is confirmed. Disable the affected feature or deactivate the component pending a confirmed vendor fix. Application-level remediation: Enforce authentication centrally on every protected entry point and verify credentials or signed tokens before creating sessions or accepting protected actions.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
Subscriber Broken Authentication in Simple JWT Login 4.0.0 versions.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H