{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54737","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-15T23:07:33.233Z","datePublished":"2026-07-31T17:48:42.670Z","dateUpdated":"2026-07-31T19:00:41.074Z"},"containers":{"cna":{"title":"@phun-ky/defaults-deep Has a Prototype Pollution issue via Unsafe Recursive Property Merging","problemTypes":[{"descriptions":[{"cweId":"CWE-1321","lang":"en","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.3,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"}}],"references":[{"name":"https://github.com/phun-ky/defaults-deep/security/advisories/GHSA-mj3g-7xcc-x4vh","tags":["x_refsource_CONFIRM"],"url":"https://github.com/phun-ky/defaults-deep/security/advisories/GHSA-mj3g-7xcc-x4vh"},{"name":"https://github.com/phun-ky/defaults-deep/pull/49","tags":["x_refsource_MISC"],"url":"https://github.com/phun-ky/defaults-deep/pull/49"},{"name":"https://github.com/phun-ky/defaults-deep/commit/807dba930f8718f9126cad59d949b8fd3539b059","tags":["x_refsource_MISC"],"url":"https://github.com/phun-ky/defaults-deep/commit/807dba930f8718f9126cad59d949b8fd3539b059"},{"name":"https://github.com/phun-ky/defaults-deep/releases/tag/2.0.5","tags":["x_refsource_MISC"],"url":"https://github.com/phun-ky/defaults-deep/releases/tag/2.0.5"}],"affected":[{"vendor":"phun-ky","product":"defaults-deep","versions":[{"version":"< 2.0.5","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-31T17:48:42.670Z"},"descriptions":[{"lang":"en","value":"@phun-ky/defaults-deep is a library like lodash defaultsDeep with array preservation and no lodash dependency. Prior to 2.0.5, defaultsDeep() recursively merges user-supplied objects without filtering proto, constructor, and prototype, allowing properties to be written to Object.prototype. This issue is fixed in version 2.0.5."}],"source":{"advisory":"GHSA-mj3g-7xcc-x4vh","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-31T18:53:15.831395Z","id":"CVE-2026-54737","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":"2026-07-31T19:00:41.074Z"}}]}}