CVE-2026-94368 Noobaa-core: noobaa-core: presigned put url escalation to copyobject via unsigned x-amz-copy-source header

A flaw was found in the signature verification logic of noobaa-core, the core component of the NooBaa Multicloud Object Gateway. The issue occurs when the service processes S3 presigned URLs using Signature Version 4 SigV4. Due to improper validation, the service fails to reject requests containi...