Aias00 opened a new issue, #6692:
URL: https://github.com/apache/shenyu/issues/6692

   - severity: Medium
   - files: 
`shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/TagServiceImpl.java:106-107`
   - description: `delete` calls only `tagMapper.deleteByIds(ids)`. `tag` is 
self-referential (`parent_tag_id`) and is referenced by `tag_relation.tag_id`. 
Deleting a tag orphans its children (children keep a dangling `parent_tag_id`) 
and leaves `tag_relation` rows pointing at a deleted tag.
   - impact: Referential integrity loss; child tags become 
unreachable/misparented; API↔tag relations leak.
   - suggested_fix: Before deleting, re-parent or reject children (query 
`selectByParentTagIds`) and delete `tag_relation` rows for the deleted tag ids; 
wrap in `@Transactional`.
   - confidence: High
   - related_existing: none.
   
   ---
   _Identified during the 2026-08-02 deep re-scan; full list in 
[`docs/scan2-2026-08-02/06-medium-tiers.md`](docs/scan2-2026-08-02/06-medium-tiers.md)._


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