{"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": "2026-03-31T19:18:35.796Z"}, "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"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2026-2950", "lastModified": "2026-03-31T20:16:26.207", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "ce714d77-add3-4f53-aff5-83d477b104bb", "type": "Secondary"}]}, "published": "2026-03-31T20:16:26.207", "references": [{"source": "ce714d77-add3-4f53-aff5-83d477b104bb", "url": "https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg"}], "sourceIdentifier": "ce714d77-add3-4f53-aff5-83d477b104bb", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1321"}], "source": "ce714d77-add3-4f53-aff5-83d477b104bb", "type": "Secondary"}]}

{}

{}