Wheels 1.1 through 4.1.2 resolves nestedProperties() records by posted primary key without checking that they belong to the parent being saved. A user able to submit a nested form for their own parent can update and reassign another parent's hasMany or hasOne rows, or delete them when allowDelete=true. Nested belongsTo records can also be edited by posting another associated record's key
Vulnerability
CVE-2026-111447
NVD
Refer to CVE-2026-111447 NVD advisory