{"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":"2026-08-06T13:09:17.168Z"},"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"}]}]}]},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/08/05/19"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-08-05T18:32:08.027Z"}},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-06T13:02:38.990835Z","id":"CVE-2026-71190","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"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":"2026-08-06T13:09:17.168Z"}}]}}