{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-94368", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-09-21T11:13:36.872Z", "datePublished": "2026-09-21T11:45:12.776Z", "dateUpdated": "2026-09-21T20:46:26.219Z"}, "containers": {"cna": {"title": "Noobaa-core: noobaa-core: presigned put url escalation to copyobject via unsigned x-amz-copy-source header", "metrics": [{"other": {"content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Openshift Data Foundation 4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "odf4/mcg-core-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:openshift_data_foundation:4"]}, {"vendor": "Red Hat", "product": "Red Hat Openshift Data Foundation 4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "rhceph-dev/odf4-mcg-core-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:openshift_data_foundation:4"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-94368", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2537364", "name": "RHBZ#2537364", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-09-21T11:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-347", "description": "Improper Verification of Cryptographic Signature", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-347: Improper Verification of Cryptographic Signature", "workarounds": [{"lang": "en", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}], "timeline": [{"lang": "en", "time": "2026-09-09T10:49:16.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-09-21T11:00:00.000Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Red Hat would like to thank Oren Yomtov (act.security) for reporting this issue."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-09-21T11:45:12.776Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-21T19:40:21.563755Z", "id": "CVE-2026-94368", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-21T20:46:26.219Z"}}]}}