FKIE_CVE-2026-23966

Vulnerability from fkie_nvd - Published: 2026-01-22 03:15 - Updated: 2026-06-17 10:22
Severity
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. A private key recovery vulnerability exists in the SM2 decryption logic of sm-crypto prior to version 0.3.14. By interacting with the SM2 decryption interface multiple times, an attacker can fully recover the private key within approximately several hundred interactions. Version 0.3.14 patches the issue.
References
security-advisories@github.comhttps://github.com/JuneAndGreen/sm-crypto/commit/b1c824e58fdf1eaa73692c124a095819a8c45707Patch
security-advisories@github.comhttps://github.com/JuneAndGreen/sm-crypto/security/advisories/GHSA-pgx9-497m-6c4vVendor Advisory
Impacted products
Vendor Product Version
juneandgreen sm-crypto *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "sm-crypto",
          "vendor": "JuneAndGreen",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.3.14"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:juneandgreen:sm-crypto:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "902F9DFD-B5BC-4BF4-9AF2-CB42F616B3D4",
              "versionEndExcluding": "0.3.14",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. A private key recovery vulnerability exists in the SM2 decryption logic of sm-crypto prior to version 0.3.14. By interacting with the SM2 decryption interface multiple times, an attacker can fully recover the private key within approximately several hundred interactions. Version 0.3.14 patches the issue."
    },
    {
      "lang": "es",
      "value": "sm-crypto proporciona implementaciones de JavaScript de los algoritmos criptogr\u00e1ficos chinos SM2, SM3 y SM4. Existe una vulnerabilidad de recuperaci\u00f3n de clave privada en la l\u00f3gica de descifrado SM2 de sm-crypto anterior a la versi\u00f3n 0.3.14. Al interactuar con la interfaz de descifrado SM2 varias veces, un atacante puede recuperar completamente la clave privada en aproximadamente varios cientos de interacciones. La versi\u00f3n 0.3.14 corrige el problema."
    }
  ],
  "id": "CVE-2026-23966",
  "lastModified": "2026-06-17T10:22:22.090",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-23966",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-01-22T15:44:28.115494Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-01-22T03:15:47.007",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/JuneAndGreen/sm-crypto/commit/b1c824e58fdf1eaa73692c124a095819a8c45707"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/JuneAndGreen/sm-crypto/security/advisories/GHSA-pgx9-497m-6c4v"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-345"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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