CVE-2026-121562

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-121562", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-11-03T14:46:18.615Z", "datePublished": "2026-11-03T15:17:17.803Z", "dateUpdated": "2026-11-12T13:24:03.317Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-11-12T13:24:03.317Z"}, "title": "CTFd 3.1.0 before 3.8.7 Information Disclosure via /api/v1/teams Endpoint", "descriptions": [{"lang": "en", "value": "CTFd 3.1.0 before 3.8.7 contains an information disclosure vulnerability in the /api/v1/teams list endpoint that exposes non-public team custom field values. Unauthenticated attackers can paginate GET requests to collect hidden registration data such as emails, phone numbers, and student IDs when team mode and public visibility are enabled."}], "datePublic": "2026-08-18T00:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "description": "Incorrect Authorization", "cweId": "CWE-863", "type": "CWE"}]}], "affected": [{"vendor": "CTFd", "product": "CTFd", "defaultStatus": "unaffected", "versions": [{"version": "3.1.0", "lessThan": "3.8.7", "versionType": "semver", "status": "affected"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:ctfd:ctfd:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.1.0", "versionEndExcluding": "3.8.7"}]}]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 6.9, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE", "version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 5.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}}], "references": [{"url": "https://github.com/CTFd/CTFd/commit/122c224030224ca6a04d2928280055a84bbd4850", "tags": ["patch"], "name": "Patch Commit"}, {"url": "https://github.com/CTFd/CTFd", "tags": ["product"]}, {"url": "https://github.com/CTFd/CTFd/blob/3.8.6/CTFd/api/v1/teams.py#L128-L131", "tags": ["technical-description"]}, {"url": "https://github.com/CTFd/CTFd/blob/3.8.6/CTFd/schemas/teams.py#L336-L363", "tags": ["technical-description"]}, {"url": "https://blog.ctfd.io/ctfd-3-8-7/", "tags": ["technical-description"]}, {"url": "https://github.com/CTFd/CTFd/releases/tag/3.8.7", "tags": ["technical-description", "release-notes"], "name": "CTFd 3.8.7 Release Notes"}, {"name": "VulnCheck Advisory: CTFd 3.1.0 before 3.8.7 Information Disclosure via /api/v1/teams Endpoint", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/ctfd-3.1.0-before-3.8.7-information-disclosure-via-api-v1-teams-endpoint"}], "credits": [{"lang": "en", "value": "oceanwarranty (Adgepuk Research)", "type": "finder"}, {"lang": "en", "value": "ColdHeat", "type": "remediation developer"}], "x_generator": {"engine": "vulncheck-endgame"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-11-09T15:18:38.798663Z", "id": "CVE-2026-121562", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-09T15:18:59.931Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-121562", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-09T15:18:38.798663Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-09T15:18:51.818Z"}}], "cna": {"title": "CTFd 3.1.0 before 3.8.7 Information Disclosure via /api/v1/teams Endpoint", "credits": [{"lang": "en", "type": "finder", "value": "Oceanwarranty (ASK PENTEST SDN. BHD.)"}, {"lang": "en", "type": "remediation developer", "value": "ColdHeat"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "baseScore": 6.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "LOW"}}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}], "affected": [{"vendor": "CTFd", "product": "CTFd", "versions": [{"status": "affected", "version": "3.1.0", "lessThan": "3.8.7", "versionType": "semver"}], "defaultStatus": "unaffected"}], "datePublic": "2026-08-18T00:00:00.000Z", "references": [{"url": "https://github.com/CTFd/CTFd/commit/122c224030224ca6a04d2928280055a84bbd4850", "name": "Patch Commit", "tags": ["patch"]}, {"url": "https://github.com/CTFd/CTFd", "tags": ["product"]}, {"url": "https://github.com/CTFd/CTFd/blob/3.8.6/CTFd/api/v1/teams.py#L128-L131", "tags": ["technical-description"]}, {"url": "https://github.com/CTFd/CTFd/blob/3.8.6/CTFd/schemas/teams.py#L336-L363", "tags": ["technical-description"]}, {"url": "https://blog.ctfd.io/ctfd-3-8-7/", "tags": ["technical-description"]}, {"url": "https://github.com/CTFd/CTFd/releases/tag/3.8.7", "name": "CTFd 3.8.7 Release Notes", "tags": ["technical-description", "release-notes"]}, {"url": "https://www.vulncheck.com/advisories/ctfd-3.1.0-before-3.8.7-information-disclosure-via-api-v1-teams-endpoint", "name": "VulnCheck Advisory: CTFd 3.1.0 before 3.8.7 Information Disclosure via /api/v1/teams Endpoint", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "vulncheck-endgame"}, "descriptions": [{"lang": "en", "value": "CTFd 3.1.0 before 3.8.7 contains an information disclosure vulnerability in the /api/v1/teams list endpoint that exposes non-public team custom field values. Unauthenticated attackers can paginate GET requests to collect hidden registration data such as emails, phone numbers, and student IDs when team mode and public visibility are enabled."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-863", "description": "Incorrect Authorization"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:ctfd:ctfd:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "3.8.7", "versionStartIncluding": "3.1.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-11-03T15:17:17.803Z"}}}, "cveMetadata": {"cveId": "CVE-2026-121562", "state": "PUBLISHED", "dateUpdated": "2026-11-09T15:18:59.931Z", "dateReserved": "2026-11-03T14:46:18.615Z", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "datePublished": "2026-11-03T15:17:17.803Z", "assignerShortName": "VulnCheck"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "CTFd", "vendor": "CTFd", "versions": [{"lessThan": "3.8.7", "status": "affected", "version": "3.1.0", "versionType": "semver"}]}], "source": "disclosure@vulncheck.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "CTFd 3.1.0 before 3.8.7 contains an information disclosure vulnerability in the /api/v1/teams list endpoint that exposes non-public team custom field values. Unauthenticated attackers can paginate GET requests to collect hidden registration data such as emails, phone numbers, and student IDs when team mode and public visibility are enabled."}, {"lang": "es", "value": "CTFd 3.1.0 versiones anteriores a la 3.8.7 contiene una vulnerabilidad de revelaci\u00f3n de informaci\u00f3n en el endpoint de lista /api/v1/teams que expone valores de campos personalizados de equipo no p\u00fablicos. Atacantes no autenticados pueden paginar solicitudes GET para recopilar datos de registro ocultos como correos electr\u00f3nicos, n\u00fameros de tel\u00e9fono e identificaciones de estudiantes cuando el modo de equipo y la visibilidad p\u00fablica est\u00e1n habilitados."}], "id": "CVE-2026-121562", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-121562", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-09T15:18:38.798663Z", "version": "2.0.3"}}]}, "published": "2026-11-03T16:17:29.107", "references": [{"source": "disclosure@vulncheck.com", "url": "https://blog.ctfd.io/ctfd-3-8-7/"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/CTFd/CTFd"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/CTFd/CTFd/blob/3.8.6/CTFd/api/v1/teams.py#L128-L131"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/CTFd/CTFd/blob/3.8.6/CTFd/schemas/teams.py#L336-L363"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/CTFd/CTFd/commit/122c224030224ca6a04d2928280055a84bbd4850"}, {"source": "disclosure@vulncheck.com", "url": "https://github.com/CTFd/CTFd/releases/tag/3.8.7"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/ctfd-3.1.0-before-3.8.7-information-disclosure-via-api-v1-teams-endpoint"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.1.0,3.8.7)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "CTFd", "source": "cna", "vendor": "CTFd"}, "product": "ctfd", "vendor": "ctfd"}], "created": "2026-11-03T17:15:02.103275+00:00", "updated": "2026-11-03T17:30:07.934755+00:00", "vendors": ["ctfd", "ctfd$PRODUCT$ctfd"]}