CVE-2026-49017

{"id": "CVE-2026-49017", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49017", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-27T13:52:48.762325Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 7.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "cve@mitre.org", "affectedData": [{"repo": "https://opendev.org/openstack/swift", "vendor": "OpenStack", "product": "Swift", "versions": [{"status": "affected", "version": "2.36.0", "lessThan": "2.36.2", "versionType": "semver"}, {"status": "affected", "version": "2.37.0", "lessThan": "2.37.2", "versionType": "semver"}, {"status": "affected", "version": "2.35.1", "lessThan": "2.35.3", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-05-27T02:16:34.327", "references": [{"url": "https://bugs.launchpad.net/bugs/2152205", "tags": ["Issue Tracking", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://review.opendev.org/c/openstack/swift/+/987957", "tags": ["Issue Tracking", "Patch"], "source": "cve@mitre.org"}, {"url": "https://review.opendev.org/c/openstack/swift/+/988093", "tags": ["Issue Tracking", "Patch"], "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/05/27/9", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2026/06/02/6", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-835"}]}], "descriptions": [{"lang": "en", "value": "In OpenStack Swift before 2.36.2 and 2.37.2, s3api middleware enters an infinite loop when processing a truncated aws-chunked PUT request body. The StreamingInput class repeatedly appends an empty buffer and re-reads, causing the proxy-server worker handling the request to become permanently unresponsive with increasing CPU and memory consumption. An authenticated attacker can systematically exhaust all proxy-server workers, resulting in denial of service. The defect was introduced in Swift 2.36.0."}, {"lang": "es", "value": "En OpenStack Swift anterior a 2.36.2 y 2.37.2, el middleware s3api entra en un bucle infinito al procesar un cuerpo de solicitud PUT aws-chunked truncado. La clase StreamingInput a\u00f1ade repetidamente un b\u00fafer vac\u00edo y vuelve a leer, lo que provoca que el worker del proxy-server que maneja la solicitud se vuelva permanentemente no responsivo con un consumo creciente de CPU y memoria. Un atacante autenticado puede agotar sistem\u00e1ticamente todos los workers del proxy-server, lo que resulta en una denegaci\u00f3n de servicio. El defecto fue introducido en Swift 2.36.0."}], "lastModified": "2026-09-24T17:25:35.187", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7FCEF342-67E9-4A29-91D5-4C3122000A4B", "versionEndExcluding": "2.35.3", "versionStartIncluding": "2.35.1"}, {"criteria": "cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EF8B39A3-B72E-4837-9CB3-F437EAC84F4B", "versionEndExcluding": "2.36.2", "versionStartIncluding": "2.36.0"}, {"criteria": "cpe:2.3:a:openstack:swift:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "581FC644-8499-4750-B70D-C726C5D15E11", "versionEndExcluding": "2.37.2", "versionStartIncluding": "2.37.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}