CVE-2026-108651 jeecgboot CVE debrief

Who should care

Defenders responsible for JeecgBoot systems, especially those with low-privileged users, should assess exposure and verify access controls. They should prioritize verifying and restricting access to the affected API endpoint, especially in systems where low-privileged users have access to the JeecgBoot system. Additionally, defenders should review compensating controls for exposed systems while remediation is scheduled and verified.

Why it matters

CVE-2026-108651 is a missing authorization vulnerability in JeecgBoot, allowing authenticated users to retrieve any user's role codes. Defenders should prioritize verifying and restricting access to the affected API endpoint.

• Enumeration of role assignments
• Identification of administrator accounts
• Potential for lateral movement
• Verification of access controls

Technical summary

The vulnerability exists in the getRolesByUserId handler of SystemApiController in JeecgBoot through 3.9.5. An authenticated user can supply arbitrary userId values to GET /sys/api/getRolesByUserId to retrieve any user's role codes. This allows for enumeration of role assignments and identification of administrator accounts within the system. The vulnerability can be exploited by low-privileged attackers, making it a significant concern for defenders who need to verify and restrict access to the affected API endpoint.

Defensive priority

Defenders should prioritize verifying and restricting access to the affected API endpoint, especially in systems where low-privileged users have access to the JeecgBoot system.

Recommended defensive actions

• Verify and restrict access to the affected API endpoint
• Monitor for suspicious activity on the JeecgBoot system
• Consider upgrading to a fixed version of JeecgBoot
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but additional verification is needed to confirm affected versions and remediation steps. The vulnerability exists in the getRolesByUserId handler of SystemApiController in JeecgBoot through 3.9.5. An authenticated user can supply arbitrary userId values to GET /sys/api/getRolesByUserId to retrieve any user's role codes. The CVE Program record and NVD entry provide source-provided CVE metadata and vulnerability assessment.

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.