{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-11T04:04:24.755","vulnerabilities":[{"cve":{"id":"CVE-2026-34827","sourceIdentifier":"security-advisories@github.com","published":"2026-04-02T18:16:33.490","lastModified":"2026-04-24T12:47:32.790","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21, and 3.2.0 to before 3.2.6, Rack::Multipart::Parser#handle_mime_head parses quoted multipart parameters such as Content-Disposition: form-data; name=\"...\" using repeated String#index searches combined with String#slice! prefix deletion. For escape-heavy quoted values, this causes super-linear processing. An unauthenticated attacker can send a crafted multipart/form-data request containing many parts with long backslash-escaped parameter values to trigger excessive CPU usage during multipart parsing. This results in a denial of service condition in Rack applications that accept multipart form data. This issue has been patched in versions 3.1.21 and 3.2.6."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-400"},{"lang":"en","value":"CWE-407"},{"lang":"en","value":"CWE-770"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*","versionStartIncluding":"3.0.0","versionEndExcluding":"3.1.21","matchCriteriaId":"6948AAA6-873D-46BA-AA22-4C81138128E1"},{"vulnerable":true,"criteria":"cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*","versionStartIncluding":"3.2.0","versionEndExcluding":"3.2.6","matchCriteriaId":"3FB592AD-E826-49BE-AC6D-E5F55FDCC96E"}]}]}],"references":[{"url":"https://github.com/rack/rack/security/advisories/GHSA-v6x5-cg8r-vv6x","source":"security-advisories@github.com","tags":["Vendor Advisory","Mitigation"]}]}}]}