CVE-2026-111694

Description

qKnow through 2.4.3 contains a missing authentication vulnerability that allows unauthenticated remote attackers to access /flyflow workflow integration endpoints permitted in SecurityConfig. Attackers can POST sequential userId values to /flyflow/userById or call roleAll and deptListByParentDeptId to enumerate user phone numbers, roles, and department structure.

References

• https://github.com/qiantongtech/qKnow
• https://github.com/qiantongtech/qKnow/blob/v2.4.3/qknow-framework/qknow-security/src/main/java/tech/qiantong/qknow/security/config/SecurityConfig.java#L133
• https://github.com/qiantongtech/qKnow/blob/v2.4.3/qknow-module-system/qknow-module-system-biz/src/main/java/tech/qiantong/qknow/module/system/controller/admin/flyflow/FlyFlowController.java#L77-L99
• https://hackmd.io/@hieuPenguinnn/qknow-flyflow-unauth-user-directory-disclosure
• https://www.vulncheck.com/advisories/qknow-through-2.4.3-missing-authentication-via-flyflow-workflow-endpoints