{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-71190", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-08-05T04:54:02.394Z", "datePublished": "2026-08-05T04:54:03.020Z", "dateUpdated": "2026-08-05T04:54:03.020Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Swift", "repo": "https://opendev.org/openstack/swift", "vendor": "OpenStack", "versions": [{"lessThan": "2.35.4", "status": "affected", "version": "1.9.1", "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, the proxy server Accept header parser contains a regular expression vulnerable to catastrophic backtracking (ReDoS). The \"qdtext\" pattern (?:[^\"]|\\\\.)* allows an unauthenticated remote attacker to send a crafted Accept header that causes exponential CPU consumption in the proxy worker. A payload of 32 backslash-character pairs exceeds 30 seconds of CPU time. No authentication is required. Repeated requests can exhaust all proxy worker threads, resulting in a complete denial of service."}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 8.7, "baseSeverity": "HIGH", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-1333", "description": "CWE-1333 Inefficient Regular Expression Complexity", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-08-05T04:54:03.020Z"}, "references": [{"tags": ["issue-tracking"], "url": "https://launchpad.net/bugs/2158771"}, {"tags": ["vendor-advisory", "mailing-list"], "url": "https://openwall.com/lists/oss-security/2026/07/28/27"}, {"tags": ["vendor-advisory"], "url": "https://security.openstack.org/ossa/OSSA-2026-031.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": "1.9.1", "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"}]}]}]}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.9.1,2.35.4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.36.0,2.36.3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.37.0,2.37.3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "2.38.0"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Swift", "source": "cna", "vendor": "OpenStack"}, "product": "swift", "vendor": "openstack"}], "created": "2026-08-05T07:00:09.747992+00:00", "title": "OpenStack Swift Accept Header Regular Expression ReDoS Enables Denial of Service", "updated": "2026-08-05T07:00:10.223336+00:00", "vendors": ["openstack", "openstack$PRODUCT$swift"]}