CVE-2026-118777 (GCVE-0-2026-118777)

Vulnerability from cvelistv5 – Published: 2026-10-29 18:42 – Updated: 2026-10-29 18:42
VLAI
Title
Forge: Prototype Pollution in forge.http cookie handling via a malicious Set-Cookie
Summary
Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the forge.http client stored cookie names and paths from Set-Cookie response headers in ordinary JavaScript objects. A malicious server could use the cookie name __proto__ so that the attacker-controlled cookie path was written as a property on Object.prototype, or use inherited names such as constructor to modify Object. An empty cookie value could use the removal path to delete an inherited Object.prototype property. Applications using forge.http directly or through forge.xhr are affected; applications that do not use forge.http are unaffected. This issue is fixed in version 1.4.1.
Severity
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7994 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
digitalbazaar forge Affected: < 1.4.1
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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          "product": "forge",
          "vendor": "digitalbazaar",
          "versions": [
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              "status": "affected",
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          "value": "Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the forge.http client stored cookie names and paths from Set-Cookie response headers in ordinary JavaScript objects. A malicious server could use the cookie name __proto__ so that the attacker-controlled cookie path was written as a property on Object.prototype, or use inherited names such as constructor to modify Object. An empty cookie value could use the removal path to delete an inherited Object.prototype property. Applications using forge.http directly or through forge.xhr are affected; applications that do not use forge.http are unaffected. This issue is fixed in version 1.4.1."
        }
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      "metrics": [
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            "confidentialityImpact": "NONE",
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            "privilegesRequired": "NONE",
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            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L",
            "version": "3.1"
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1321",
              "description": "CWE-1321: Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027)",
              "lang": "en",
              "type": "CWE"
            }
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      "providerMetadata": {
        "dateUpdated": "2026-10-29T18:42:06.079Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
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          "name": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-6wvx-3r32-xmcg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-6wvx-3r32-xmcg"
        },
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          "name": "https://github.com/digitalbazaar/forge/commit/797c3f816a22748a96fceebb34eb3a6716853991",
          "tags": [
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          ],
          "url": "https://github.com/digitalbazaar/forge/commit/797c3f816a22748a96fceebb34eb3a6716853991"
        },
        {
          "name": "https://github.com/digitalbazaar/forge/releases/tag/v1.4.1",
          "tags": [
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          "url": "https://github.com/digitalbazaar/forge/releases/tag/v1.4.1"
        }
      ],
      "source": {
        "advisory": "GHSA-6wvx-3r32-xmcg",
        "discovery": "UNKNOWN"
      },
      "title": "Forge: Prototype Pollution in forge.http cookie handling via a malicious Set-Cookie"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-118777",
    "datePublished": "2026-10-29T18:42:06.079Z",
    "dateReserved": "2026-10-28T19:20:05.018Z",
    "dateUpdated": "2026-10-29T18:42:06.079Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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  "vulnerability-lookup:meta": {
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                "vendor": "digitalbazaar",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 1.4.1"
                  }
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        "cveTags": [],
        "descriptions": [
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            "value": "Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the forge.http client stored cookie names and paths from Set-Cookie response headers in ordinary JavaScript objects. A malicious server could use the cookie name __proto__ so that the attacker-controlled cookie path was written as a property on Object.prototype, or use inherited names such as constructor to modify Object. An empty cookie value could use the removal path to delete an inherited Object.prototype property. Applications using forge.http directly or through forge.xhr are affected; applications that do not use forge.http are unaffected. This issue is fixed in version 1.4.1."
          }
        ],
        "id": "CVE-2026-118777",
        "lastModified": "2026-10-29T19:17:20.283",
        "metrics": {
          "cvssMetricV31": [
            {
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                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 4.8,
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                "confidentialityImpact": "NONE",
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                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L",
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        "references": [
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            "source": "security-advisories@github.com",
            "url": "https://github.com/digitalbazaar/forge/commit/797c3f816a22748a96fceebb34eb3a6716853991"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/digitalbazaar/forge/releases/tag/v1.4.1"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-6wvx-3r32-xmcg"
          }
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        "vulnStatus": "Received",
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              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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