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6 vulnerabilities found for elliptic-curves by RustCrypto

CVE-2026-22700 (GCVE-0-2026-22700)

Vulnerability from nvd – Published: 2026-01-10 05:17 – Updated: 2026-01-10 05:17
VLAI?
Title
RustCrypto Has Insufficient Length Validation in decrypt() in SM2-PKE
Summary
RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a denial-of-service vulnerability exists in the SM2 public-key encryption (PKE) implementation: the decrypt() path performs unchecked slice::split_at operations on input buffers derived from untrusted ciphertext. An attacker can submit short/undersized ciphertext or carefully-crafted DER-encoded structures to trigger bounds-check panics (Rust unwinding) which crash the calling thread or process. This issue has been patched via commit e60e991.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
RustCrypto elliptic-curves Affected: = 0.14.0-pre.0
Affected: = 0.14.0-rc.0
Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "elliptic-curves",
          "vendor": "RustCrypto",
          "versions": [
            {
              "status": "affected",
              "version": "= 0.14.0-pre.0"
            },
            {
              "status": "affected",
              "version": "= 0.14.0-rc.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a denial-of-service vulnerability exists in the SM2 public-key encryption (PKE) implementation: the decrypt() path performs unchecked slice::split_at operations on input buffers derived from untrusted ciphertext. An attacker can submit short/undersized ciphertext or carefully-crafted DER-encoded structures to trigger bounds-check panics (Rust unwinding) which crash the calling thread or process. This issue has been patched via commit e60e991."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-10T05:17:25.583Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-j9xq-69pf-pcm8",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-j9xq-69pf-pcm8"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/pull/1603",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/pull/1603"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/commit/e60e99167a9a2b187ebe80c994c5204b0fdaf4ab",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/commit/e60e99167a9a2b187ebe80c994c5204b0fdaf4ab"
        }
      ],
      "source": {
        "advisory": "GHSA-j9xq-69pf-pcm8",
        "discovery": "UNKNOWN"
      },
      "title": "RustCrypto Has Insufficient Length Validation in decrypt() in SM2-PKE"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-22700",
    "datePublished": "2026-01-10T05:17:25.583Z",
    "dateReserved": "2026-01-08T19:23:09.856Z",
    "dateUpdated": "2026-01-10T05:17:25.583Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-22699 (GCVE-0-2026-22699)

Vulnerability from nvd – Published: 2026-01-10 05:17 – Updated: 2026-01-10 05:17
VLAI?
Title
RustCrypto SM2-PKE has Unchecked AffinePoint Decoding (unwrap) in decrypt()
Summary
RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a denial-of-service vulnerability exists in the SM2 PKE decryption path where an invalid elliptic-curve point (C1) is decoded and the resulting value is unwrapped without checking. Specifically, AffinePoint::from_encoded_point(&encoded_c1) may return a None/CtOption::None when the supplied coordinates are syntactically valid but do not lie on the SM2 curve. The calling code previously used .unwrap(), causing a panic when presented with such input. This issue has been patched via commit 085b7be.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
RustCrypto elliptic-curves Affected: = 0.14.0-pre.0
Affected: = 0.14.0-rc.0
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "elliptic-curves",
          "vendor": "RustCrypto",
          "versions": [
            {
              "status": "affected",
              "version": "= 0.14.0-pre.0"
            },
            {
              "status": "affected",
              "version": "= 0.14.0-rc.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a denial-of-service vulnerability exists in the SM2 PKE decryption path where an invalid elliptic-curve point (C1) is decoded and the resulting value is unwrapped without checking. Specifically, AffinePoint::from_encoded_point(\u0026encoded_c1) may return a None/CtOption::None when the supplied coordinates are syntactically valid but do not lie on the SM2 curve. The calling code previously used .unwrap(), causing a panic when presented with such input. This issue has been patched via commit 085b7be."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-10T05:17:22.818Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-78p6-6878-8mj6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-78p6-6878-8mj6"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/pull/1602",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/pull/1602"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/commit/085b7bee647029bd189e1375203418205006bcab",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/commit/085b7bee647029bd189e1375203418205006bcab"
        }
      ],
      "source": {
        "advisory": "GHSA-78p6-6878-8mj6",
        "discovery": "UNKNOWN"
      },
      "title": "RustCrypto SM2-PKE has Unchecked AffinePoint Decoding (unwrap) in decrypt()"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-22699",
    "datePublished": "2026-01-10T05:17:22.818Z",
    "dateReserved": "2026-01-08T19:23:09.856Z",
    "dateUpdated": "2026-01-10T05:17:22.818Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-22698 (GCVE-0-2026-22698)

Vulnerability from nvd – Published: 2026-01-10 05:17 – Updated: 2026-01-10 05:17
VLAI?
Title
RustCrypto SM2-PKE has 32-bit Biased Nonce Vulnerability
Summary
RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a critical vulnerability exists in the SM2 Public Key Encryption (PKE) implementation where the ephemeral nonce k is generated with severely reduced entropy. A unit mismatch error causes the nonce generation function to request only 32 bits of randomness instead of the expected 256 bits. This reduces the security of the encryption from a 128-bit level to a trivial 16-bit level, allowing a practical attack to recover the nonce k and decrypt any ciphertext given only the public key and ciphertext. This issue has been patched via commit e4f7778.
Severity ?
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CWE
Assigner
References
Impacted products
Vendor Product Version
RustCrypto elliptic-curves Affected: = 0.14.0-pre.0
Affected: = 0.14.0-rc.0
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "elliptic-curves",
          "vendor": "RustCrypto",
          "versions": [
            {
              "status": "affected",
              "version": "= 0.14.0-pre.0"
            },
            {
              "status": "affected",
              "version": "= 0.14.0-rc.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a  critical vulnerability exists in the SM2 Public Key Encryption (PKE) implementation where the ephemeral nonce k is generated with severely reduced entropy. A unit mismatch error causes the nonce generation function to request only 32 bits of randomness instead of the expected 256 bits. This reduces the security of the encryption from a 128-bit level to a trivial 16-bit level, allowing a practical attack to recover the nonce k and decrypt any ciphertext given only the public key and ciphertext. This issue has been patched via commit e4f7778."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-331",
              "description": "CWE-331: Insufficient Entropy",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-10T05:17:19.993Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-w3g8-fp6j-wvqw",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-w3g8-fp6j-wvqw"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/pull/1600",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/pull/1600"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/commit/4781762f23ff22ab34763410f648128055c93731",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/commit/4781762f23ff22ab34763410f648128055c93731"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/commit/e4f77788130d065d760e57fb109370827110a525",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/commit/e4f77788130d065d760e57fb109370827110a525"
        },
        {
          "name": "https://crates.io/crates/sm2/0.14.0-pre.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://crates.io/crates/sm2/0.14.0-pre.0"
        },
        {
          "name": "https://crates.io/crates/sm2/0.14.0-rc.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://crates.io/crates/sm2/0.14.0-rc.0"
        }
      ],
      "source": {
        "advisory": "GHSA-w3g8-fp6j-wvqw",
        "discovery": "UNKNOWN"
      },
      "title": "RustCrypto SM2-PKE has 32-bit Biased Nonce Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-22698",
    "datePublished": "2026-01-10T05:17:19.993Z",
    "dateReserved": "2026-01-08T19:23:09.856Z",
    "dateUpdated": "2026-01-10T05:17:19.993Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-22700 (GCVE-0-2026-22700)

Vulnerability from cvelistv5 – Published: 2026-01-10 05:17 – Updated: 2026-01-10 05:17
VLAI?
Title
RustCrypto Has Insufficient Length Validation in decrypt() in SM2-PKE
Summary
RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a denial-of-service vulnerability exists in the SM2 public-key encryption (PKE) implementation: the decrypt() path performs unchecked slice::split_at operations on input buffers derived from untrusted ciphertext. An attacker can submit short/undersized ciphertext or carefully-crafted DER-encoded structures to trigger bounds-check panics (Rust unwinding) which crash the calling thread or process. This issue has been patched via commit e60e991.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
RustCrypto elliptic-curves Affected: = 0.14.0-pre.0
Affected: = 0.14.0-rc.0
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "elliptic-curves",
          "vendor": "RustCrypto",
          "versions": [
            {
              "status": "affected",
              "version": "= 0.14.0-pre.0"
            },
            {
              "status": "affected",
              "version": "= 0.14.0-rc.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a denial-of-service vulnerability exists in the SM2 public-key encryption (PKE) implementation: the decrypt() path performs unchecked slice::split_at operations on input buffers derived from untrusted ciphertext. An attacker can submit short/undersized ciphertext or carefully-crafted DER-encoded structures to trigger bounds-check panics (Rust unwinding) which crash the calling thread or process. This issue has been patched via commit e60e991."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-10T05:17:25.583Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-j9xq-69pf-pcm8",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-j9xq-69pf-pcm8"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/pull/1603",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/pull/1603"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/commit/e60e99167a9a2b187ebe80c994c5204b0fdaf4ab",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/commit/e60e99167a9a2b187ebe80c994c5204b0fdaf4ab"
        }
      ],
      "source": {
        "advisory": "GHSA-j9xq-69pf-pcm8",
        "discovery": "UNKNOWN"
      },
      "title": "RustCrypto Has Insufficient Length Validation in decrypt() in SM2-PKE"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-22700",
    "datePublished": "2026-01-10T05:17:25.583Z",
    "dateReserved": "2026-01-08T19:23:09.856Z",
    "dateUpdated": "2026-01-10T05:17:25.583Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-22699 (GCVE-0-2026-22699)

Vulnerability from cvelistv5 – Published: 2026-01-10 05:17 – Updated: 2026-01-10 05:17
VLAI?
Title
RustCrypto SM2-PKE has Unchecked AffinePoint Decoding (unwrap) in decrypt()
Summary
RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a denial-of-service vulnerability exists in the SM2 PKE decryption path where an invalid elliptic-curve point (C1) is decoded and the resulting value is unwrapped without checking. Specifically, AffinePoint::from_encoded_point(&encoded_c1) may return a None/CtOption::None when the supplied coordinates are syntactically valid but do not lie on the SM2 curve. The calling code previously used .unwrap(), causing a panic when presented with such input. This issue has been patched via commit 085b7be.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-20 - Improper Input Validation
Assigner
References
Impacted products
Vendor Product Version
RustCrypto elliptic-curves Affected: = 0.14.0-pre.0
Affected: = 0.14.0-rc.0
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "elliptic-curves",
          "vendor": "RustCrypto",
          "versions": [
            {
              "status": "affected",
              "version": "= 0.14.0-pre.0"
            },
            {
              "status": "affected",
              "version": "= 0.14.0-rc.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a denial-of-service vulnerability exists in the SM2 PKE decryption path where an invalid elliptic-curve point (C1) is decoded and the resulting value is unwrapped without checking. Specifically, AffinePoint::from_encoded_point(\u0026encoded_c1) may return a None/CtOption::None when the supplied coordinates are syntactically valid but do not lie on the SM2 curve. The calling code previously used .unwrap(), causing a panic when presented with such input. This issue has been patched via commit 085b7be."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-10T05:17:22.818Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-78p6-6878-8mj6",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-78p6-6878-8mj6"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/pull/1602",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/pull/1602"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/commit/085b7bee647029bd189e1375203418205006bcab",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/commit/085b7bee647029bd189e1375203418205006bcab"
        }
      ],
      "source": {
        "advisory": "GHSA-78p6-6878-8mj6",
        "discovery": "UNKNOWN"
      },
      "title": "RustCrypto SM2-PKE has Unchecked AffinePoint Decoding (unwrap) in decrypt()"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-22699",
    "datePublished": "2026-01-10T05:17:22.818Z",
    "dateReserved": "2026-01-08T19:23:09.856Z",
    "dateUpdated": "2026-01-10T05:17:22.818Z",
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CVE-2026-22698 (GCVE-0-2026-22698)

Vulnerability from cvelistv5 – Published: 2026-01-10 05:17 – Updated: 2026-01-10 05:17
VLAI?
Title
RustCrypto SM2-PKE has 32-bit Biased Nonce Vulnerability
Summary
RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a critical vulnerability exists in the SM2 Public Key Encryption (PKE) implementation where the ephemeral nonce k is generated with severely reduced entropy. A unit mismatch error causes the nonce generation function to request only 32 bits of randomness instead of the expected 256 bits. This reduces the security of the encryption from a 128-bit level to a trivial 16-bit level, allowing a practical attack to recover the nonce k and decrypt any ciphertext given only the public key and ciphertext. This issue has been patched via commit e4f7778.
Severity ?
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CWE
Assigner
References
Impacted products
Vendor Product Version
RustCrypto elliptic-curves Affected: = 0.14.0-pre.0
Affected: = 0.14.0-rc.0
Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "elliptic-curves",
          "vendor": "RustCrypto",
          "versions": [
            {
              "status": "affected",
              "version": "= 0.14.0-pre.0"
            },
            {
              "status": "affected",
              "version": "= 0.14.0-rc.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "RustCrypto: Elliptic Curves is general purpose Elliptic Curve Cryptography (ECC) support, including types and traits for representing various elliptic curve forms, scalars, points, and public/secret keys composed thereof. In versions 0.14.0-pre.0 and 0.14.0-rc.0, a  critical vulnerability exists in the SM2 Public Key Encryption (PKE) implementation where the ephemeral nonce k is generated with severely reduced entropy. A unit mismatch error causes the nonce generation function to request only 32 bits of randomness instead of the expected 256 bits. This reduces the security of the encryption from a 128-bit level to a trivial 16-bit level, allowing a practical attack to recover the nonce k and decrypt any ciphertext given only the public key and ciphertext. This issue has been patched via commit e4f7778."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-331",
              "description": "CWE-331: Insufficient Entropy",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-10T05:17:19.993Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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      "references": [
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          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/security/advisories/GHSA-w3g8-fp6j-wvqw"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/pull/1600",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/pull/1600"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/commit/4781762f23ff22ab34763410f648128055c93731",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/commit/4781762f23ff22ab34763410f648128055c93731"
        },
        {
          "name": "https://github.com/RustCrypto/elliptic-curves/commit/e4f77788130d065d760e57fb109370827110a525",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/RustCrypto/elliptic-curves/commit/e4f77788130d065d760e57fb109370827110a525"
        },
        {
          "name": "https://crates.io/crates/sm2/0.14.0-pre.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://crates.io/crates/sm2/0.14.0-pre.0"
        },
        {
          "name": "https://crates.io/crates/sm2/0.14.0-rc.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://crates.io/crates/sm2/0.14.0-rc.0"
        }
      ],
      "source": {
        "advisory": "GHSA-w3g8-fp6j-wvqw",
        "discovery": "UNKNOWN"
      },
      "title": "RustCrypto SM2-PKE has 32-bit Biased Nonce Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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    "cveId": "CVE-2026-22698",
    "datePublished": "2026-01-10T05:17:19.993Z",
    "dateReserved": "2026-01-08T19:23:09.856Z",
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