FKIE_CVE-2026-23967

Vulnerability from fkie_nvd - Published: 2026-01-22 03:15 - Updated: 2026-06-17 10:22
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. A signature malleability vulnerability exists in the SM2 signature verification logic of the sm-crypto library prior to version 0.3.14. An attacker can derive a new valid signature for a previously signed message from an existing signature. Version 0.3.14 patches the issue.
References
security-advisories@github.comhttps://github.com/JuneAndGreen/sm-crypto/security/advisories/GHSA-qv7w-v773-3xqmVendor 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 signature malleability vulnerability exists in the SM2 signature verification logic of the sm-crypto library prior to version 0.3.14. An attacker can derive a new valid signature for a previously signed message from an existing signature. 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 maleabilidad de firma en la l\u00f3gica de verificaci\u00f3n de firma SM2 de la librer\u00eda sm-crypto anterior a la versi\u00f3n 0.3.14. Un atacante puede derivar una nueva firma v\u00e1lida para un mensaje previamente firmado a partir de una firma existente. La versi\u00f3n 0.3.14 corrige el problema."
    }
  ],
  "id": "CVE-2026-23967",
  "lastModified": "2026-06-17T10:22:22.200",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-23967",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-01-22T16:03:25.576580Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-01-22T03:15:47.167",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/JuneAndGreen/sm-crypto/security/advisories/GHSA-qv7w-v773-3xqm"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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