{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-71191", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-08-05T05:01:20.566Z", "datePublished": "2026-08-05T05:01:20.971Z", "dateUpdated": "2026-08-05T05:01:20.971Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Swift", "repo": "https://opendev.org/openstack/swift", "vendor": "OpenStack", "versions": [{"lessThan": "2.35.4", "status": "affected", "version": "2.18.0", "versionType": "semver"}, {"lessThan": "2.36.3", "status": "affected", "version": "2.36.0", "versionType": "semver"}, {"lessThan": "2.37.3", "status": "affected", "version": "2.37.0", "versionType": "semver"}, {"status": "affected", "version": "2.38.0", "versionType": "semver"}]}], "descriptions": [{"lang": "en", "value": "In OpenStack Swift through 2.38.0, S3API middleware does not enforce that semantic x-amz-* headers are covered by the SigV4 signature on presigned URL requests. An attacker who obtains a presigned PUT URL can inject an unsigned X-Amz-Copy-Source header, causing Swift to perform a server-side copy from an arbitrary source object using the signer's authorization context. The attacker can read any object the signer has access to, provided the target project_id, container name, and object name are known. This affects all deployments using the default s3_acl=false configuration."}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 6, "baseSeverity": "MEDIUM", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-863", "description": "CWE-863 Incorrect Authorization", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-08-05T05:01:20.971Z"}, "references": [{"tags": ["issue-tracking"], "url": "https://launchpad.net/bugs/2158733"}, {"tags": ["mailing-list", "vendor-advisory"], "url": "https://openwall.com/lists/oss-security/2026/07/28/26"}, {"tags": ["vendor-advisory"], "url": "https://security.openstack.org/ossa/OSSA-2026-030.html"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}, "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.18.0", "versionEndExcluding": "2.35.4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.36.0", "versionEndExcluding": "2.36.3"}, {"vulnerable": true, "criteria": "cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.37.0", "versionEndExcluding": "2.37.3"}, {"vulnerable": true, "criteria": "cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.38.0", "versionEndIncluding": "2.38.0"}]}]}]}}}

{}

{}

{}

{"created": "2026-08-05T06:30:03.092706+00:00", "title": "Unsigned X-Amz-Copy-Source Header Injection in OpenStack Swift S3API Presigned URLs", "updated": "2026-08-05T06:30:03.092712+00:00", "vendors": []}