2 lines
3.1 KiB
JSON
2 lines
3.1 KiB
JSON
{"affected":[{"affectedData":[{"defaultStatus":"unaffected","packageURL":"pkg:npm/multer","product":"multer","vendor":"multer","versions":[{"lessThan":"2.2.0","status":"affected","version":"1.0.0","versionType":"semver"},{"status":"unaffected","version":"2.2.0","versionType":"semver"},{"lessThan":"3.0.0-alpha.2","status":"affected","version":"3.0.0-alpha.1","versionType":"semver"},{"status":"unaffected","version":"3.0.0-alpha.2","versionType":"semver"}]}],"source":"ce714d77-add3-4f53-aff5-83d477b104bb"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:expressjs:multer:*:*:*:*:*:node.js:*:*","matchCriteriaId":"1E348250-84AB-45C6-9620-BE6B36746814","versionEndExcluding":"2.2.0","versionStartIncluding":"1.0.0","vulnerable":true},{"criteria":"cpe:2.3:a:expressjs:multer:3.0.0:alpha1:*:*:*:node.js:*:*","matchCriteriaId":"F23451DE-A7F1-46E8-9023-CA415ED56050","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"Impact: multer versions 1.0.0 through 2.1.1 and 3.0.0-alpha.1 are vulnerable to a Denial of Service via deeply nested field names in multipart form data. The append-field dependency parses bracket notation in field names with no limit on nesting depth, allowing an attacker to force allocation of deeply nested object structures that consume CPU and memory. A single HTTP request with a crafted multipart body is sufficient to exploit this.\n\nPatches: Users should upgrade to multer 2.2.0 (2.x line) or 3.0.0-alpha.2 (3.x prerelease) and configure the new limits.fieldNestingDepth option to the minimum depth their application requires.\n\nWorkarounds: Set limits.fields to a reasonable value to reduce the number of fields an attacker can send per request. This does not fully mitigate the issue but limits the impact."}],"id":"CVE-2026-5079","lastModified":"2026-06-17T10:58:24.257","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":3.6,"source":"ce714d77-add3-4f53-aff5-83d477b104bb","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-5079","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-06-15T16:00:29.855724Z","version":"2.0.3"}}]},"published":"2026-06-15T14:16:37.293","references":[{"source":"ce714d77-add3-4f53-aff5-83d477b104bb","tags":["Vendor Advisory"],"url":"https://cna.openjsf.org/security-advisories.html"},{"source":"ce714d77-add3-4f53-aff5-83d477b104bb","tags":["Mitigation","Vendor Advisory"],"url":"https://github.com/expressjs/multer/security/advisories/GHSA-72gw-mp4g-v24j"}],"sourceIdentifier":"ce714d77-add3-4f53-aff5-83d477b104bb","vulnStatus":"Analyzed","weaknesses":[{"description":[{"lang":"en","value":"CWE-400"}],"source":"ce714d77-add3-4f53-aff5-83d477b104bb","type":"Secondary"}]}
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