CVE-2026-111690 suyuan32 CVE debrief

Who should care

Defenders and administrators of Simple Admin Core versions up to 1.8.7 should assess exposure and verify authentication and authorization controls. They should also review and update access controls and user permissions to prevent unauthorized access. Additionally, they should plan vendor-supported updates or mitigations through normal change control where exposure is confirmed and review compensating controls for exposed systems while remediation is and

Why it matters

CVE-2026-111690 is a critical vulnerability in Simple Admin Core through 1.8.7 that allows unauthenticated attackers to forge super administrator tokens. Defenders and administrators should assess exposure, verify authentication and authorization controls, and apply patches or updates to address the vulnerability.

• Potential unauthorized access to administrative controls
• Possible elevation of privileges for attackers
• Risk of configuration and token compromise
• Need for verification of patch application and vulnerability remediation

Technical summary

Simple Admin Core through 1.8.7 contains a hard-coded JWT secret authentication bypass vulnerability. Attackers can forge super administrator tokens using the hard-coded Auth.AccessSecret in api/etc/core.yaml. This vulnerability has a CVSS score of 9.3 and is considered critical. The vulnerability allows unauthenticated attackers to gain full administrative control over users, roles, menus, API authorities, configuration, and tokens. Defenders and administrators should assess exposure, verify authentication and authorization controls, and apply patches or updates to address the vulnerability.

Defensive priority

High priority for authentication and authorization control verification

Recommended defensive actions

• Verify authentication and authorization controls for Simple Admin Core versions up to 1.8.7
• Check for and apply patches or updates to address the hard-coded JWT secret vulnerability
• Review and update access controls and user permissions to prevent unauthorized access
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

Official CVE Program record and NVD vulnerability detail provide critical information on CVE-2026-111690. The source references offer additional context on the vulnerability and potential mitigations. However, the exact scope of affected deployments and specific patch guidance require further verification. Defenders should review the official advisory and CVE record to validate affected scope, severity, and vendor guidance.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.