FKIE_CVE-2026-29063

Vulnerability from fkie_nvd - Published: 2026-03-06 19:16 - Updated: 2026-03-09 13:35
Severity ?
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Summary
Immutable.js provides many Persistent Immutable data structures. Prior to versions 3.8.3, 4.3.7, and 5.1.5, Prototype Pollution is possible in immutable via the mergeDeep(), mergeDeepWith(), merge(), Map.toJS(), and Map.toObject() APIs. This issue has been patched in versions 3.8.3, 4.3.7, and 5.1.5.
References
security-advisories@github.comhttps://github.com/immutable-js/immutable-js/releases/tag/v3.8.3
security-advisories@github.comhttps://github.com/immutable-js/immutable-js/releases/tag/v4.3.8
security-advisories@github.comhttps://github.com/immutable-js/immutable-js/releases/tag/v5.1.5
security-advisories@github.comhttps://github.com/immutable-js/immutable-js/security/advisories/GHSA-wf6x-7x77-mvgw
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Immutable.js provides many Persistent Immutable data structures. Prior to versions 3.8.3, 4.3.7, and 5.1.5, Prototype Pollution is possible in immutable via the mergeDeep(), mergeDeepWith(), merge(), Map.toJS(), and Map.toObject() APIs. This issue has been patched in versions 3.8.3, 4.3.7, and 5.1.5."
    },
    {
      "lang": "es",
      "value": "Immutable.js proporciona muchas estructuras de datos inmutables persistentes. Antes de las versiones 3.8.3, 4.3.7 y 5.1.5, la contaminaci\u00f3n de prototipos es posible en immutable a trav\u00e9s de las APIs mergeDeep(), mergeDeepWith(), merge(), Map.toJS() y Map.toObject(). Este problema ha sido parcheado en las versiones 3.8.3, 4.3.7 y 5.1.5."
    }
  ],
  "id": "CVE-2026-29063",
  "lastModified": "2026-03-09T13:35:34.633",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-06T19:16:21.557",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/immutable-js/immutable-js/releases/tag/v3.8.3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/immutable-js/immutable-js/releases/tag/v4.3.8"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/immutable-js/immutable-js/releases/tag/v5.1.5"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/immutable-js/immutable-js/security/advisories/GHSA-wf6x-7x77-mvgw"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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