{"id":"CVE-2026-54737","summary":"@phun-ky/defaults-deep Has a Prototype Pollution issue via Unsafe Recursive Property Merging","details":"@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.","aliases":["GHSA-mj3g-7xcc-x4vh"],"modified":"2026-08-02T03:47:23.056580445Z","published":"2026-07-31T17:48:42.670Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-1321"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54737.json"},"references":[{"type":"WEB","url":"https://github.com/phun-ky/defaults-deep/releases/tag/2.0.5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54737.json"},{"type":"ADVISORY","url":"https://github.com/phun-ky/defaults-deep/security/advisories/GHSA-mj3g-7xcc-x4vh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54737"},{"type":"FIX","url":"https://github.com/phun-ky/defaults-deep/commit/807dba930f8718f9126cad59d949b8fd3539b059"},{"type":"FIX","url":"https://github.com/phun-ky/defaults-deep/pull/49"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/phun-ky/defaults-deep","events":[{"introduced":"0"},{"fixed":"807dba930f8718f9126cad59d949b8fd3539b059"},{"fixed":"f585c805d4a6763adef0cd05cc5e5d80b89a0dd6"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.0.5"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["2.0.4","2.0.3","2.0.2","2.0.1","2.0.0","1.1.19","1.1.18","1.1.17","1.1.16","1.1.15","1.1.14","1.1.13","1.1.12","1.1.11","1.1.10","1.1.9","1.1.8","1.1.7","1.1.6","1.1.5","1.1.4","1.1.3","1.1.2","1.1.1","1.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54737.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}