CVE-2026-18712 Improper Authorization in MongoDB Queryable Encryption Maintenance Operations Allows Unauthorized Modification of Other Collections

An issue in MongoDB Server's Queryable Encryption maintenance operations could allow an authenticated user with privileges on one encrypted collection to cause unauthorized modification or destruction of data belonging to a different collection. This is due to insufficient validation of certain...

CVE-2026-46107

A flaw was found in the Linux kernel's Device Mapper dm-thin component. This vulnerability, a metadata reference count underflow, occurs in the rebalancechildren function. When an internal btree node with a single entry is shared, the system incorrectly tracks the usage of child nodes. This can...

EUVD-2026-32866

In the Linux kernel, the following vulnerability has been resolved: dm-thin: fix metadata refcount underflow There's a bug in dm-thin in the function rebalancechildren. If the internal btree node has one entry, the code tries to copy all btree entries from the node's child to the node itself and...