{"id":"CVE-2026-25047","summary":"deepHas vulnerable to Prototype Pollution via constructor.prototype","details":"deepHas provides a test for the existence of a nested object key and optionally returns that key. A prototype pollution vulnerability exists in version 1.0.7 of the deephas npm package that allows an attacker to modify global object behavior. This issue was fixed in version 1.0.8.","aliases":["GHSA-2733-6c58-pf27"],"modified":"2026-08-12T03:51:20.207455872Z","published":"2026-01-29T21:39:48.498Z","database_specific":{"cwe_ids":["CWE-1321"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25047.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25047.json"},{"type":"ADVISORY","url":"https://github.com/sharpred/deepHas/security/advisories/GHSA-2733-6c58-pf27"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25047"},{"type":"FIX","url":"https://github.com/sharpred/deepHas/commit/8097fafd3776c613d8066546653e0d2c7b5fc465"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/sharpred/deephas","events":[{"introduced":"54685e712c6ab54fcd79a339743da2c297141000"},{"fixed":"8097fafd3776c613d8066546653e0d2c7b5fc465"}],"database_specific":{"extracted_events":[{"introduced":"1.0.7"},{"last_affected":"1.0.7"}],"source":["CPE_STRING","REFERENCES"],"cpe":"cpe:2.3:a:sharpred:deephas:1.0.7:*:*:*:*:node.js:*:*"}}],"versions":["1.0.7"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-25047.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"}]}