CVE-2026-108677 jeecgboot CVE debrief

Who should care

System administrators and security teams responsible for JeecgBoot installations should assess exposure and prioritize remediation. Low-privileged users with access to the affected endpoint are at risk.

Why it matters

CVE-2026-108677 is a high-severity vulnerability in JeecgBoot that allows low-privileged users to retrieve user passwords. Defenders should verify and remediate this vulnerability, especially in systems where low-privileged users have access to the affected endpoint. The vulnerability's impact includes potential password exposure, lateral movement, and increased risk of unauthorized access. Evidence is based on official CVE and NVD records, as well as source references from Vulncheck and GitHub.

• Password exposure for offline guessing
• Potential lateral movement through low-privileged user accounts
• Increased risk of unauthorized access to sensitive information
• Need for verification of affected versions and remediation status

Technical summary

The CVE-2026-108677 vulnerability allows low-privileged authenticated users to retrieve any user's stored password value through the GET /sys/api/getUserByName endpoint in JeecgBoot versions through 3.9.5. The passwords are protected by AES-CBC and can be decrypted using a hard-coded key exposed by /sys/getEncryptedString. Defenders should prioritize verifying and remediating this vulnerability, especially in systems where low-privileged users have access to the affected endpoint. Evidence is based on official CVE and NVD records, as well as source references from Vulncheck and GitHub.

Defensive priority

Defenders should prioritize verifying and remediating this vulnerability, especially in systems where low-privileged users have access to the affected endpoint.

Recommended defensive actions

• Verify the version of JeecgBoot being used and assess if it is vulnerable.
• Restrict access to the GET /sys/api/getUserByName endpoint to authorized users.
• Consider implementing additional security measures to protect user passwords.
• Monitor for any suspicious activity related to the affected endpoint.
• 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.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The vulnerability was reported by [email protected] and is documented in the CVE Program record and the NVD vulnerability detail page. Additional details are provided in source references from GitHub and Vulncheck.

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.