FKIE_CVE-2026-2950

Vulnerability from fkie_nvd - Published: 2026-03-31 20:16 - Updated: 2026-07-24 20:10
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
Impact: Lodash 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. The issue permits deletion of prototype properties but does not allow overwriting their original behavior. Patches: This issue is patched in 4.18.0. Workarounds: None. Upgrade to the patched version.
References
ce714d77-add3-4f53-aff5-83d477b104bbhttps://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpgVendor Advisory
Impacted products
Vendor Product Version
lodash lodash *
lodash lodash-amd *
lodash lodash-es *
lodash lodash.unset *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/lodash",
          "product": "lodash",
          "vendor": "lodash",
          "versions": [
            {
              "lessThan": "4.18.0",
              "status": "affected",
              "version": "4.17.23",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.18.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/lodash-es",
          "product": "lodash-es",
          "vendor": "lodash",
          "versions": [
            {
              "lessThan": "4.18.0",
              "status": "affected",
              "version": "4.17.23",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.18.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/lodash-amd",
          "product": "lodash-amd",
          "vendor": "lodash",
          "versions": [
            {
              "lessThan": "4.18.0",
              "status": "affected",
              "version": "4.17.23",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.18.0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/lodash.unset",
          "product": "lodash.unset",
          "vendor": "lodash",
          "versions": [
            {
              "lessThan": "4.18.0",
              "status": "affected",
              "version": "4.0.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.18.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "ce714d77-add3-4f53-aff5-83d477b104bb"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:lodash:lodash:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "0F9E287B-784B-472D-9FA2-1469E4C8A810",
              "versionEndExcluding": "4.17.23",
              "versionStartIncluding": "4.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:lodash:lodash-amd:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "3A1B5527-B25F-49B8-A289-E964EFFCF4E4",
              "versionEndExcluding": "4.17.23",
              "versionStartIncluding": "4.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:lodash:lodash-es:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "4C20325C-6B92-4775-89D7-2650F158B622",
              "versionEndExcluding": "4.17.23",
              "versionStartIncluding": "4.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:lodash:lodash.unset:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "43DC850D-9F26-4445-BAB1-9AF9BA37095C",
              "versionStartIncluding": "4.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "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."
    },
    {
      "lang": "es",
      "value": "Impacto:\n\nLas versiones de Lodash 4.17.23 y anteriores son vulnerables a la contaminaci\u00f3n de prototipos en las funciones _.unset y _.omit. La soluci\u00f3n para (CVE-2025-13465: https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg) solo protege contra miembros de clave de tipo cadena, por lo que un atacante puede eludir la verificaci\u00f3n pasando segmentos de ruta envueltos en arrays. Esto permite la eliminaci\u00f3n de propiedades de prototipos incorporados como Object.prototype, Number.prototype y String.prototype.\n\nEl problema permite la eliminaci\u00f3n de propiedades de prototipo, pero no permite sobrescribir su comportamiento original.\n\nParches:\n\nEste problema est\u00e1 parcheado en 4.18.0.\n\nSoluciones alternativas:\n\nNinguna. Actualice a la versi\u00f3n parcheada."
    }
  ],
  "id": "CVE-2026-2950",
  "lastModified": "2026-07-24T20:10:00.147",
  "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"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "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:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-2950",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-01T13:43:14.280375Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-03-31T20:16:26.207",
  "references": [
    {
      "source": "ce714d77-add3-4f53-aff5-83d477b104bb",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg"
    }
  ],
  "sourceIdentifier": "ce714d77-add3-4f53-aff5-83d477b104bb",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ],
      "source": "ce714d77-add3-4f53-aff5-83d477b104bb",
      "type": "Secondary"
    }
  ]
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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