CVE-2026-33703

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33703", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-23T17:06:05.746Z", "datePublished": "2026-04-10T18:23:01.031Z", "dateUpdated": "2026-04-14T14:05:24.505Z"}, "containers": {"cna": {"title": "Chamilo LMS Critical IDOR: Any Authenticated User Can Extract All Users\u2019 Personal Data and API Tokens", "problemTypes": [{"descriptions": [{"cweId": "CWE-639", "lang": "en", "description": "CWE-639: Authorization Bypass Through User-Controlled Key", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-27x6-c5c7-gpf5", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-27x6-c5c7-gpf5"}], "affected": [{"vendor": "chamilo", "product": "chamilo-lms", "versions": [{"version": "< 2.0.0-RC.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-10T18:23:01.031Z"}, "descriptions": [{"lang": "en", "value": "Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, an Insecure Direct Object Reference (IDOR) vulnerability in the /social-network/personal-data/{userId} endpoint allows any authenticated user to access full personal data and API tokens of arbitrary users by modifying the userId parameter. This results in mass disclosure of sensitive user information and credentials, enabling a full platform data breach. This vulnerability is fixed in 2.0.0-RC.3."}], "source": {"advisory": "GHSA-27x6-c5c7-gpf5", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-14T14:05:15.563101Z", "id": "CVE-2026-33703", "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": "2026-04-14T14:05:24.505Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-33703", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-14T14:05:15.563101Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-14T14:05:20.321Z"}}], "cna": {"title": "Chamilo LMS Critical IDOR: Any Authenticated User Can Extract All Users\u2019 Personal Data and API Tokens", "source": {"advisory": "GHSA-27x6-c5c7-gpf5", "discovery": "UNKNOWN"}, "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 7.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE"}}], "affected": [{"vendor": "chamilo", "product": "chamilo-lms", "versions": [{"status": "affected", "version": "< 2.0.0-RC.3"}]}], "references": [{"url": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-27x6-c5c7-gpf5", "name": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-27x6-c5c7-gpf5", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, an Insecure Direct Object Reference (IDOR) vulnerability in the /social-network/personal-data/{userId} endpoint allows any authenticated user to access full personal data and API tokens of arbitrary users by modifying the userId parameter. This results in mass disclosure of sensitive user information and credentials, enabling a full platform data breach. This vulnerability is fixed in 2.0.0-RC.3."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-639", "description": "CWE-639: Authorization Bypass Through User-Controlled Key"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-10T18:23:01.031Z"}}}, "cveMetadata": {"cveId": "CVE-2026-33703", "state": "PUBLISHED", "dateUpdated": "2026-04-14T14:05:24.505Z", "dateReserved": "2026-03-23T17:06:05.746Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-04-10T18:23:01.031Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "chamilo-lms", "vendor": "chamilo", "versions": [{"status": "affected", "version": "< 2.0.0-RC.3"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha1:*:*:*:*:*:*", "matchCriteriaId": "4AF7661F-C1F7-4CAB-BBDF-FC5BF7F5BEB8", "vulnerable": true}, {"criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha2:*:*:*:*:*:*", "matchCriteriaId": "FE56AF71-9D53-42C6-980D-09E1C418ED87", "vulnerable": true}, {"criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha3:*:*:*:*:*:*", "matchCriteriaId": "01195674-9E1A-4C07-B7D3-0F0CC2E6511B", "vulnerable": true}, {"criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha4:*:*:*:*:*:*", "matchCriteriaId": "BAE63449-5A56-4302-A4BF-F3D19FC96A80", "vulnerable": true}, {"criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:alpha5:*:*:*:*:*:*", "matchCriteriaId": "A84A06F9-5AB7-4703-8153-33AC68882B95", "vulnerable": true}, {"criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta1:*:*:*:*:*:*", "matchCriteriaId": "B91302A3-53DE-4ED0-BAAB-FE9DA03F8242", "vulnerable": true}, {"criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta2:*:*:*:*:*:*", "matchCriteriaId": "46008D4A-96F7-4E04-8256-E115AAAE3383", "vulnerable": true}, {"criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:beta3:*:*:*:*:*:*", "matchCriteriaId": "6E2BCAFF-D44B-4E67-998A-DF855E27606B", "vulnerable": true}, {"criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:rc1:*:*:*:*:*:*", "matchCriteriaId": "D2E7D018-E4C2-45F5-8D9A-DAC947173607", "vulnerable": true}, {"criteria": "cpe:2.3:a:chamilo:chamilo_lms:2.0.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "DAF96697-6B6D-459D-9510-E5CEEDC2859B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, an Insecure Direct Object Reference (IDOR) vulnerability in the /social-network/personal-data/{userId} endpoint allows any authenticated user to access full personal data and API tokens of arbitrary users by modifying the userId parameter. This results in mass disclosure of sensitive user information and credentials, enabling a full platform data breach. This vulnerability is fixed in 2.0.0-RC.3."}, {"lang": "es", "value": "Chamilo LMS es un sistema de gesti\u00f3n del aprendizaje. Antes de la versi\u00f3n 2.0.0-RC.3, una vulnerabilidad de Referencia Directa Insegura a Objeto (IDOR) en el endpoint /social-network/personal-data/{userId} permite a cualquier usuario autenticado acceder a datos personales completos y tokens de API de usuarios arbitrarios modificando el par\u00e1metro userId. Esto resulta en una divulgaci\u00f3n masiva de informaci\u00f3n sensible del usuario y credenciales, lo que permite una violaci\u00f3n de datos completa de la plataforma. Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 2.0.0-RC.3."}], "id": "CVE-2026-33703", "lastModified": "2026-10-26T21:10:00.170", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.1, "baseSeverity": "HIGH", "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": "LOW", "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:L/UI:N/VC:N/VI:H/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": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-33703", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-14T14:05:15.563101Z", "version": "2.0.3"}}]}, "published": "2026-04-10T19:16:23.327", "references": [{"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-27x6-c5c7-gpf5"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-639"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.0.0-RC.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "chamilo-lms", "source": "cna", "vendor": "chamilo"}, "product": "chamilo_lms", "vendor": "chamilo"}], "analysis": {"en": {"generated_at": "2026-04-10T19:20:34.328410+00:00", "value": {"mitigation_remediation": ["Upgrade Chamilo LMS to version 2.0.0\u2011RC.3 or later.", "Verify that the personal\u2011data endpoint enforces user\u2011id validation and only returns data for the authenticated user."], "summary": {"action": "Apply patch", "impact": "Mass disclosure of sensitive user data and credentials"}, "threat_synthesis": {"affected_systems": "Versions of Chamilo LMS released by the Chamilo vendor that are older than 2.0.0\u2011RC.3 are affected. The vulnerability is located in the web application\u2019s social\u2011network personal\u2011data endpoint.", "description_and_impact": "Chamilo LMS before version 2.0.0\u2011RC.3 has an insecure direct object reference error in the /social\u2011network/personal\u2011data/{userId} endpoint. Any user who has logged in can modify the userId parameter and retrieve the complete personal profile and API tokens of any other user. This flaw leads to a full data breach, exposing private information and authentication credentials.", "risk_and_exploitability": "The CVSS base score of 7.1 places this vulnerability in the high\u2011severity range. Although EPSS information is not available, the requirement that the attacker only needs valid credentials and a simple HTTP request increases the likelihood of exploitation. The flaw is not listed in the CISA KEV catalog, but the potential for mass data leakage requires immediate action."}}}}, "created": "2026-04-13T12:43:26.422477+00:00", "updated": "2026-04-13T12:59:46.744504+00:00", "vendors": ["chamilo", "chamilo$PRODUCT$chamilo_lms"]}