CVE-2026-118776 (GCVE-0-2026-118776)

Vulnerability from cvelistv5 – Published: 2026-10-29 18:37 – Updated: 2026-10-29 18:37
VLAI
Title
Forge: Incomplete PKCS#7 padding validation in AES/DES CBC and ECB decryption
Summary
Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used decipher.finish(), CBC and ECB modes, PKCS#7 padding to process the relevant input or security decision. node-forge validated only the final byte of PKCS#7 padding during CBC and ECB decryption and accepted zero, oversized, or mismatched padding bytes. Malformed ciphertext could consequently be accepted and up to four plaintext blocks could be silently removed, causing an integrity failure in applications that treated successful decryption as proof of valid padding. This issue is fixed in version 1.4.1.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-20 - Improper Input Validation
  • CWE-354 - Improper Validation of Integrity Check Value
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 

{
  "containers": {
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      "affected": [
        {
          "product": "forge",
          "vendor": "digitalbazaar",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.4.1"
            }
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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 affected implementation used decipher.finish(), CBC and ECB modes, PKCS#7 padding to process the relevant input or security decision. node-forge validated only the final byte of PKCS#7 padding during CBC and ECB decryption and accepted zero, oversized, or mismatched padding bytes. Malformed ciphertext could consequently be accepted and up to four plaintext blocks could be silently removed, causing an integrity failure in applications that treated successful decryption as proof of valid padding. This issue is fixed in version 1.4.1."
        }
      ],
      "metrics": [
        {
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            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-354",
              "description": "CWE-354: Improper Validation of Integrity Check Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-29T18:37:32.362Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-2vgq-wchc-25w7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/digitalbazaar/forge/security/advisories/GHSA-2vgq-wchc-25w7"
        },
        {
          "name": "https://github.com/digitalbazaar/forge/commit/81774ff99e2da64aec9a43591df45a360040c136",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/digitalbazaar/forge/commit/81774ff99e2da64aec9a43591df45a360040c136"
        },
        {
          "name": "https://github.com/digitalbazaar/forge/releases/tag/v1.4.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/digitalbazaar/forge/releases/tag/v1.4.1"
        }
      ],
      "source": {
        "advisory": "GHSA-2vgq-wchc-25w7",
        "discovery": "UNKNOWN"
      },
      "title": "Forge: Incomplete PKCS#7 padding validation in AES/DES CBC and ECB decryption"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-118776",
    "datePublished": "2026-10-29T18:37:32.362Z",
    "dateReserved": "2026-10-28T19:20:05.018Z",
    "dateUpdated": "2026-10-29T18:37:32.362Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
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          {
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              {
                "product": "forge",
                "vendor": "digitalbazaar",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 1.4.1"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used decipher.finish(), CBC and ECB modes, PKCS#7 padding to process the relevant input or security decision. node-forge validated only the final byte of PKCS#7 padding during CBC and ECB decryption and accepted zero, oversized, or mismatched padding bytes. Malformed ciphertext could consequently be accepted and up to four plaintext blocks could be silently removed, causing an integrity failure in applications that treated successful decryption as proof of valid padding. This issue is fixed in version 1.4.1."
          }
        ],
        "id": "CVE-2026-118776",
        "lastModified": "2026-10-29T19:17:20.147",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 3.7,
                "baseSeverity": "LOW",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N",
                "version": "3.1"
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              "impactScore": 1.4,
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              "type": "Secondary"
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        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/digitalbazaar/forge/commit/81774ff99e2da64aec9a43591df45a360040c136"
          },
          {
            "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-2vgq-wchc-25w7"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-20"
              },
              {
                "lang": "en",
                "value": "CWE-354"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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