Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/217889?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/217889?format=api", "vulnerability_id": "VCID-tb46-43c3-tyap", "summary": "An issue was discovered in fastecdsa before 2.1.2. When using the NIST P-256 curve in the ECDSA implementation, the point at infinity is mishandled. This means that for an extreme value in k and s^-1, the signature verification fails even if the signature is correct. This behavior is not solely a usability problem. There are some threat models where an attacker can benefit by successfully guessing users for whom signature verification will fail.", "aliases": [ { "alias": "CVE-2020-12607" }, { "alias": "GHSA-56wv-2wr9-3h9r" }, { "alias": "PYSEC-2020-42" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/58753?format=api", "purl": "pkg:pypi/fastecdsa@2.1.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@2.1.2" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/58711?format=api", "purl": "pkg:pypi/fastecdsa@1.0.0b1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.0.0b1" }, { "url": "http://public2.vulnerablecode.io/api/packages/58712?format=api", "purl": "pkg:pypi/fastecdsa@1.0.1b1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.0.1b1" }, { "url": "http://public2.vulnerablecode.io/api/packages/58713?format=api", "purl": "pkg:pypi/fastecdsa@1.0.1b2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.0.1b2" }, { "url": "http://public2.vulnerablecode.io/api/packages/58714?format=api", "purl": "pkg:pypi/fastecdsa@1.0.1b3", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.0.1b3" }, { "url": "http://public2.vulnerablecode.io/api/packages/58716?format=api", "purl": "pkg:pypi/fastecdsa@1.0.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.0.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/58717?format=api", "purl": "pkg:pypi/fastecdsa@1.0.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.0.2" }, { "url": "http://public2.vulnerablecode.io/api/packages/58719?format=api", "purl": "pkg:pypi/fastecdsa@1.0.3", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.0.3" }, { "url": "http://public2.vulnerablecode.io/api/packages/58720?format=api", "purl": "pkg:pypi/fastecdsa@1.1.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.1.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/58722?format=api", "purl": "pkg:pypi/fastecdsa@1.1.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.1.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/58724?format=api", "purl": "pkg:pypi/fastecdsa@1.1.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.1.2" }, { "url": "http://public2.vulnerablecode.io/api/packages/58725?format=api", "purl": "pkg:pypi/fastecdsa@1.1.3", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.1.3" }, { "url": "http://public2.vulnerablecode.io/api/packages/58727?format=api", "purl": "pkg:pypi/fastecdsa@1.2.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.2.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/58728?format=api", "purl": "pkg:pypi/fastecdsa@1.3.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.3.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/58729?format=api", "purl": "pkg:pypi/fastecdsa@1.3.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.3.2" }, { "url": "http://public2.vulnerablecode.io/api/packages/58730?format=api", "purl": "pkg:pypi/fastecdsa@1.4.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.4.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/58731?format=api", "purl": "pkg:pypi/fastecdsa@1.4.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.4.2" }, { "url": "http://public2.vulnerablecode.io/api/packages/58732?format=api", "purl": "pkg:pypi/fastecdsa@1.4.3", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.4.3" }, { "url": "http://public2.vulnerablecode.io/api/packages/58733?format=api", "purl": "pkg:pypi/fastecdsa@1.5.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.5.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/58734?format=api", "purl": "pkg:pypi/fastecdsa@1.5.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.5.2" }, { "url": "http://public2.vulnerablecode.io/api/packages/58735?format=api", "purl": "pkg:pypi/fastecdsa@1.6.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.6.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/58736?format=api", "purl": "pkg:pypi/fastecdsa@1.6.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": 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"VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.6.5" }, { "url": "http://public2.vulnerablecode.io/api/packages/58741?format=api", "purl": "pkg:pypi/fastecdsa@1.7.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.7.0" }, { "url": "http://public2.vulnerablecode.io/api/packages/58743?format=api", "purl": "pkg:pypi/fastecdsa@1.7.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.7.1" }, { "url": "http://public2.vulnerablecode.io/api/packages/58744?format=api", "purl": "pkg:pypi/fastecdsa@1.7.2", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.7.2" }, { "url": "http://public2.vulnerablecode.io/api/packages/58746?format=api", "purl": "pkg:pypi/fastecdsa@1.7.3", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.7.3" }, { "url": "http://public2.vulnerablecode.io/api/packages/58747?format=api", "purl": "pkg:pypi/fastecdsa@1.7.4", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@1.7.4" }, { "url": "http://public2.vulnerablecode.io/api/packages/58749?format=api", "purl": "pkg:pypi/fastecdsa@1.7.5", "is_vulnerable": true, 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"pkg:pypi/fastecdsa@2.1.1", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-ba96-m7t2-cyf1" }, { "vulnerability": "VCID-tb46-43c3-tyap" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/fastecdsa@2.1.1" } ], "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2020-12607", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00169", "scoring_system": "epss", "scoring_elements": "0.37828", "published_at": "2026-06-11T12:55:00Z" }, { "value": "0.00169", "scoring_system": "epss", "scoring_elements": "0.38005", "published_at": "2026-06-12T12:55:00Z" }, { "value": "0.00169", "scoring_system": "epss", "scoring_elements": "0.38031", "published_at": "2026-06-13T12:55:00Z" }, { "value": "0.00169", "scoring_system": "epss", "scoring_elements": "0.38018", "published_at": "2026-06-14T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-12607" }, { "reference_url": "https://github.com/advisories/GHSA-56wv-2wr9-3h9r", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N" }, { "value": "HIGH", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-56wv-2wr9-3h9r" }, { "reference_url": "https://github.com/AntonKueltz/fastecdsa", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/AntonKueltz/fastecdsa" }, { "reference_url": "https://github.com/AntonKueltz/fastecdsa/commit/4a16daeaf139be20654ef58a9fe4c79dc030458c", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/AntonKueltz/fastecdsa/commit/4a16daeaf139be20654ef58a9fe4c79dc030458c" }, { "reference_url": "https://github.com/AntonKueltz/fastecdsa/commit/7b64e3efaa806b4daaf73bb5172af3581812f8de", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/AntonKueltz/fastecdsa/commit/7b64e3efaa806b4daaf73bb5172af3581812f8de" }, { "reference_url": "https://github.com/AntonKueltz/fastecdsa/commit/e592f106edd5acf6dacedfab2ad16fe6c735c9d1", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/AntonKueltz/fastecdsa/commit/e592f106edd5acf6dacedfab2ad16fe6c735c9d1" }, { "reference_url": "https://github.com/AntonKueltz/fastecdsa/issues/52", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/AntonKueltz/fastecdsa/issues/52" }, { "reference_url": "https://github.com/pypa/advisory-database/tree/main/vulns/fastecdsa/PYSEC-2020-42.yaml", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/pypa/advisory-database/tree/main/vulns/fastecdsa/PYSEC-2020-42.yaml" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12607", "reference_id": "", "reference_type": "", "scores": [ { "value": "7.5", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N" }, { "value": "8.7", "scoring_system": "cvssv4", "scoring_elements": "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" }, { "value": "HIGH", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-12607" } ], "weaknesses": [ { "cwe_id": 347, "name": "Improper Verification of Cryptographic Signature", "description": "The product does not verify, or incorrectly verifies, the cryptographic signature for data." }, { "cwe_id": 937, "name": "OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013." }, { "cwe_id": 1035, "name": "OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities", "description": "Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017." } ], "exploits": [], "severity_range_score": "7.0 - 8.9", "exploitability": "0.5", "weighted_severity": "8.0", "risk_score": 4.0, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-tb46-43c3-tyap" }