Vulnerability Instance
Lookup for vulnerabilities affecting packages.
GET /api/vulnerabilities/26820?format=api
{ "url": "http://public2.vulnerablecode.io/api/vulnerabilities/26820?format=api", "vulnerability_id": "VCID-111h-br2m-7bbu", "summary": "LTI JupyterHub Authenticator does not properly validate JWT Signature\n### Impact\n\nOnly users that has configured a JupyterHub installation to use the authenticator class `LTI13Authenticator` are influenced.\n\nLTI13Authenticator that was introduced in `jupyterhub-ltiauthenticator` 1.3.0 wasn't validating JWT signatures. This is believed to allow the LTI13Authenticator to authorize a forged request granting access to existing and new user identities.\n\n### Patches\n\nNone.\n\n### Workarounds\n\nNone.\n\n### References\n\n- [This code segment](https://github.com/jupyterhub/ltiauthenticator/blob/3feec2e81b9d3b0ad6b58ab4226af640833039f3/ltiauthenticator/lti13/validator.py#L122-L164) didn't validate a JWT signature.", "aliases": [ { "alias": "CVE-2023-25574" }, { "alias": "GHSA-mcgx-2gcr-p3hp" } ], "fixed_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/69488?format=api", "purl": "pkg:pypi/jupyterhub-ltiauthenticator@1.4.0", "is_vulnerable": false, "affected_by_vulnerabilities": [], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub-ltiauthenticator@1.4.0" } ], "affected_packages": [ { "url": "http://public2.vulnerablecode.io/api/packages/69487?format=api", "purl": "pkg:pypi/jupyterhub-ltiauthenticator@1.3.0", "is_vulnerable": true, "affected_by_vulnerabilities": [ { "vulnerability": "VCID-111h-br2m-7bbu" } ], "resource_url": "http://public2.vulnerablecode.io/packages/pkg:pypi/jupyterhub-ltiauthenticator@1.3.0" } ], "references": [ { "reference_url": "https://api.first.org/data/v1/epss?cve=CVE-2023-25574", "reference_id": "", "reference_type": "", "scores": [ { "value": "0.00234", "scoring_system": "epss", "scoring_elements": "0.46192", "published_at": "2026-04-02T12:55:00Z" }, { "value": "0.00234", "scoring_system": "epss", "scoring_elements": "0.46212", "published_at": "2026-04-04T12:55:00Z" }, { "value": "0.0037", "scoring_system": "epss", "scoring_elements": "0.5889", "published_at": "2026-04-16T12:55:00Z" }, { "value": "0.0037", "scoring_system": "epss", "scoring_elements": "0.58856", "published_at": "2026-04-13T12:55:00Z" }, { "value": "0.0037", "scoring_system": "epss", "scoring_elements": "0.58876", "published_at": "2026-04-12T12:55:00Z" }, { "value": "0.0037", "scoring_system": "epss", "scoring_elements": "0.58894", "published_at": "2026-04-18T12:55:00Z" }, { "value": "0.0037", "scoring_system": "epss", "scoring_elements": "0.58893", "published_at": "2026-04-11T12:55:00Z" }, { "value": "0.00587", "scoring_system": "epss", "scoring_elements": "0.69119", "published_at": "2026-04-09T12:55:00Z" }, { "value": "0.00587", "scoring_system": "epss", "scoring_elements": "0.69099", "published_at": "2026-04-08T12:55:00Z" }, { "value": "0.00587", "scoring_system": "epss", "scoring_elements": "0.6905", "published_at": "2026-04-07T12:55:00Z" } ], "url": "https://api.first.org/data/v1/epss?cve=CVE-2023-25574" }, { "reference_url": "https://github.com/jupyterhub/ltiauthenticator", "reference_id": "", "reference_type": "", "scores": [ { "value": "10.0", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://github.com/jupyterhub/ltiauthenticator" }, { "reference_url": "https://github.com/jupyterhub/ltiauthenticator/blob/3feec2e81b9d3b0ad6b58ab4226af640833039f3/ltiauthenticator/lti13/validator.py#L122-L164", "reference_id": "", "reference_type": "", "scores": [ { "value": "10", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H" }, { "value": "10.0", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2025-02-25T14:50:01Z/" } ], "url": "https://github.com/jupyterhub/ltiauthenticator/blob/3feec2e81b9d3b0ad6b58ab4226af640833039f3/ltiauthenticator/lti13/validator.py#L122-L164" }, { "reference_url": "https://github.com/jupyterhub/ltiauthenticator/blob/main/CHANGELOG.md#140---2023-03-01", "reference_id": "", "reference_type": "", "scores": [ { "value": "10", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H" }, { "value": "10.0", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2025-02-25T14:50:01Z/" } ], "url": "https://github.com/jupyterhub/ltiauthenticator/blob/main/CHANGELOG.md#140---2023-03-01" }, { "reference_url": "https://github.com/jupyterhub/ltiauthenticator/security/advisories/GHSA-mcgx-2gcr-p3hp", "reference_id": "", "reference_type": "", "scores": [ { "value": "10", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H" }, { "value": "10.0", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H" }, { "value": "CRITICAL", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" }, { "value": "Track", "scoring_system": "ssvc", "scoring_elements": "SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2025-02-25T14:50:01Z/" } ], "url": "https://github.com/jupyterhub/ltiauthenticator/security/advisories/GHSA-mcgx-2gcr-p3hp" }, { "reference_url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25574", "reference_id": "", "reference_type": "", "scores": [ { "value": "10.0", "scoring_system": "cvssv3.1", "scoring_elements": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H" }, { "value": "CRITICAL", "scoring_system": "generic_textual", "scoring_elements": "" } ], "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-25574" }, { "reference_url": "https://github.com/advisories/GHSA-mcgx-2gcr-p3hp", "reference_id": "GHSA-mcgx-2gcr-p3hp", "reference_type": "", "scores": [ { "value": "CRITICAL", "scoring_system": "cvssv3.1_qr", "scoring_elements": "" } ], "url": "https://github.com/advisories/GHSA-mcgx-2gcr-p3hp" } ], "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": "9.0 - 10.0", "exploitability": "0.5", "weighted_severity": "9.0", "risk_score": 4.5, "resource_url": "http://public2.vulnerablecode.io/vulnerabilities/VCID-111h-br2m-7bbu" }