FKIE_CVE-2026-107353

Vulnerability from fkie_nvd - Published: 2026-10-07 20:17 - Updated: 2026-10-07 21:17
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Summary
traverse (npm) versions 0.3.6 through 0.3.9, 0.4.0 through 0.4.6, 0.5.0 through 0.5.2, and 0.6.0 through 0.6.11 allow prototype pollution through set(). When the path passed to set() crosses a primitive value, the next path segment is resolved on that primitive's built-in prototype, so an application that passes an untrusted path to set() lets an attacker add or overwrite properties of String.prototype, Number.prototype, or Boolean.prototype using plain JSON data, for example traverse({ name: 'bob' }).set(['name', '__proto__', 'polluted'], 'yes'). Object.prototype was reachable only with a non-data path segment, such as an object whose toString returns a different value on each call, or through a Proxy that accepts an assignment without storing it. This is fixed in 0.3.10, 0.4.7, 0.5.3, and 0.6.12.
References
7ffcee3d-2c14-4c3e-b844-86c6a321a158https://github.com/ljharb/js-traverse/commit/37a9ebd103d2a259c824c29cdcc3f0dfe1acffce
7ffcee3d-2c14-4c3e-b844-86c6a321a158https://github.com/ljharb/js-traverse/commit/81ccab43e379cf42eb2a5f689630f7f79b3d71b8
7ffcee3d-2c14-4c3e-b844-86c6a321a158https://github.com/ljharb/js-traverse/security/advisories/GHSA-rj28-8w7x-jmqc
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://www.npmjs.com",
          "defaultStatus": "unaffected",
          "packageName": "traverse",
          "product": "traverse",
          "programRoutines": [
            {
              "name": "set"
            }
          ],
          "repo": "https://github.com/ljharb/js-traverse",
          "vendor": "ljharb",
          "versions": [
            {
              "lessThan": "0.3.10",
              "status": "affected",
              "version": "0.3.6",
              "versionType": "semver"
            },
            {
              "lessThan": "0.4.7",
              "status": "affected",
              "version": "0.4.0",
              "versionType": "semver"
            },
            {
              "lessThan": "0.5.3",
              "status": "affected",
              "version": "0.5.0",
              "versionType": "semver"
            },
            {
              "lessThan": "0.6.12",
              "status": "affected",
              "version": "0.6.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "7ffcee3d-2c14-4c3e-b844-86c6a321a158"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "traverse (npm) versions 0.3.6 through 0.3.9, 0.4.0 through 0.4.6, 0.5.0 through 0.5.2, and 0.6.0 through 0.6.11 allow prototype pollution through set(). When the path passed to set() crosses a primitive value, the next path segment is resolved on that primitive\u0027s built-in prototype, so an application that passes an untrusted path to set() lets an attacker add or overwrite properties of String.prototype, Number.prototype, or Boolean.prototype using plain JSON data, for example traverse({ name: \u0027bob\u0027 }).set([\u0027name\u0027, \u0027__proto__\u0027, \u0027polluted\u0027], \u0027yes\u0027). Object.prototype was reachable only with a non-data path segment, such as an object whose toString returns a different value on each call, or through a Proxy that accepts an assignment without storing it. This is fixed in 0.3.10, 0.4.7, 0.5.3, and 0.6.12."
    }
  ],
  "id": "CVE-2026-107353",
  "lastModified": "2026-10-07T21:17:15.537",
  "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": "7ffcee3d-2c14-4c3e-b844-86c6a321a158",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 6.9,
          "baseSeverity": "MEDIUM",
          "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:N/VI:L/VA:L/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": "LOW",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "7ffcee3d-2c14-4c3e-b844-86c6a321a158",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-107353",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-07T20:36:56.178663Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-07T20:17:11.860",
  "references": [
    {
      "source": "7ffcee3d-2c14-4c3e-b844-86c6a321a158",
      "url": "https://github.com/ljharb/js-traverse/commit/37a9ebd103d2a259c824c29cdcc3f0dfe1acffce"
    },
    {
      "source": "7ffcee3d-2c14-4c3e-b844-86c6a321a158",
      "url": "https://github.com/ljharb/js-traverse/commit/81ccab43e379cf42eb2a5f689630f7f79b3d71b8"
    },
    {
      "source": "7ffcee3d-2c14-4c3e-b844-86c6a321a158",
      "url": "https://github.com/ljharb/js-traverse/security/advisories/GHSA-rj28-8w7x-jmqc"
    }
  ],
  "sourceIdentifier": "7ffcee3d-2c14-4c3e-b844-86c6a321a158",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ],
      "source": "7ffcee3d-2c14-4c3e-b844-86c6a321a158",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.