{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-2950","assignerOrgId":"ce714d77-add3-4f53-aff5-83d477b104bb","state":"PUBLISHED","assignerShortName":"openjs","dateReserved":"2026-02-21T20:04:35.087Z","datePublished":"2026-03-31T19:18:35.796Z","dateUpdated":"2026-04-01T13:43:21.491Z"},"containers":{"cna":{"providerMetadata":{"orgId":"ce714d77-add3-4f53-aff5-83d477b104bb","shortName":"openjs","dateUpdated":"2026-03-31T19:18:35.796Z"},"descriptions":[{"lang":"en","value":"Impact:\n\nLodash versions 4.17.23 and earlier are vulnerable to prototype pollution in the _.unset and _.omit functions. The fix for (CVE-2025-13465: https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg) only guards against string key members, so an attacker can bypass the check by passing array-wrapped path segments. This allows deletion of properties from built-in prototypes such as Object.prototype, Number.prototype, and String.prototype.\n\nThe issue permits deletion of prototype properties but does not allow overwriting their original behavior.\n\nPatches:\n\nThis issue is patched in 4.18.0.\n\nWorkarounds:\n\nNone. Upgrade to the patched version.","supportingMedia":[{"type":"text/html","base64":false,"value":"Impact:\n\nLodash versions 4.17.23 and earlier are vulnerable to prototype pollution in the _.unset and _.omit functions. The fix for (CVE-2025-13465: https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg) only guards against string key members, so an attacker can bypass the check by passing array-wrapped path segments. This allows deletion of properties from built-in prototypes such as Object.prototype, Number.prototype, and String.prototype.\n\nThe issue permits deletion of prototype properties but does not allow overwriting their original behavior.\n\nPatches:\n\nThis issue is patched in 4.18.0.\n\nWorkarounds:\n\nNone. Upgrade to the patched version."}]}],"affected":[{"vendor":"lodash","product":"lodash","defaultStatus":"unaffected","versions":[{"versionType":"semver","status":"affected","version":"4.17.23","lessThan":"4.18.0"},{"versionType":"semver","status":"unaffected","version":"4.18.0"}],"packageURL":"pkg:npm/lodash"},{"vendor":"lodash","product":"lodash-es","defaultStatus":"unaffected","versions":[{"versionType":"semver","status":"affected","version":"4.17.23","lessThan":"4.18.0"},{"versionType":"semver","status":"unaffected","version":"4.18.0"}],"packageURL":"pkg:npm/lodash-es"},{"vendor":"lodash","product":"lodash-amd","defaultStatus":"unaffected","versions":[{"versionType":"semver","status":"affected","version":"4.17.23","lessThan":"4.18.0"},{"versionType":"semver","status":"unaffected","version":"4.18.0"}],"packageURL":"pkg:npm/lodash-amd"},{"vendor":"lodash","product":"lodash.unset","defaultStatus":"unaffected","versions":[{"versionType":"semver","status":"affected","version":"4.0.0","lessThan":"4.18.0"},{"versionType":"semver","status":"unaffected","version":"4.18.0"}],"packageURL":"pkg:npm/lodash.unset"}],"references":[{"url":"https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg"}],"credits":[{"lang":"en","type":"reporter","value":"Haruna38"},{"lang":"en","type":"finder","value":"shpik-kr"},{"lang":"en","type":"finder","value":"maru1009"},{"lang":"en","type":"finder","value":"ott3r07"},{"lang":"en","type":"finder","value":"zolbooo"},{"lang":"en","type":"finder","value":"backuardo"},{"lang":"en","type":"remediation developer","value":"falsyvalues"},{"lang":"en","type":"remediation developer","value":"jonchurch"},{"lang":"en","type":"analyst","value":"jdalton"},{"lang":"en","type":"remediation reviewer","value":"UlisesGascon"}],"title":"lodash vulnerable to Prototype Pollution via array path bypass in `_.unset` and `_.omit`","metrics":[{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","baseScore":6.5,"baseSeverity":"MEDIUM"},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1321","lang":"en","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","type":"CWE"}]}],"x_generator":{"engine":"cve-kit 1.0.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-01T13:43:14.280375Z","id":"CVE-2026-2950","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":"2026-04-01T13:43:21.491Z"}}]}}