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

Type: advisorySource: Official CVE List1 source record

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 containing unsigned x-amz- headers, instead simply dropping them from the signature calculation. This allows an attacker who possesses a valid presigned PUT URL to add an unsigned x-amz-copy-source header, effectively converting a simple upload into a CopyObject operation. This can lead to unauthorized access and copying of any data the original signer is permitted to reach across the entire storage system.

Announced Source revision 1
Original source ↗

CVE-2026-94368

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-94368

Red Hat Openshift Data Foundation 4

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Red Hat Openshift Data Foundation 4

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "cpes": [
      "cpe:/a:redhat:openshift_data_foundation:4"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Openshift Data Foundation 4",
    "packageName": "odf4/mcg-core-rhel9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  },
  {
    "cpes": [
      "cpe:/a:redhat:openshift_data_foundation:4"
    ],
    "vendor": "Red Hat",
    "product": "Red Hat Openshift Data Foundation 4",
    "packageName": "rhceph-dev/odf4-mcg-core-rhel9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-94368

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#1998 · Revision 1
Added to Heist Feed
Publisher date
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