{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33668", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-23T15:23:42.220Z", "datePublished": "2026-03-24T15:30:27.159Z", "dateUpdated": "2026-03-26T19:52:13.977Z"}, "containers": {"cna": {"title": "Vikunja Allows Disabled/Locked User Accounts to Authenticate via API Tokens, CalDAV, and OpenID Connect", "problemTypes": [{"descriptions": [{"cweId": "CWE-285", "lang": "en", "description": "CWE-285: Improper Authorization", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-863", "lang": "en", "description": "CWE-863: Incorrect Authorization", "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/go-vikunja/vikunja/security/advisories/GHSA-94xm-jj8x-3cr4", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-94xm-jj8x-3cr4"}, {"name": "https://github.com/go-vikunja/vikunja/commit/033922309f492996c928122fb49b691339199c35", "tags": ["x_refsource_MISC"], "url": "https://github.com/go-vikunja/vikunja/commit/033922309f492996c928122fb49b691339199c35"}, {"name": "https://github.com/go-vikunja/vikunja/commit/04704e0fde4b027039cf583110cee7afe136fc1b", "tags": ["x_refsource_MISC"], "url": "https://github.com/go-vikunja/vikunja/commit/04704e0fde4b027039cf583110cee7afe136fc1b"}, {"name": "https://github.com/go-vikunja/vikunja/commit/0b04768d830c80e9fde1b0962db1499cc652da0e", "tags": ["x_refsource_MISC"], "url": "https://github.com/go-vikunja/vikunja/commit/0b04768d830c80e9fde1b0962db1499cc652da0e"}, {"name": "https://github.com/go-vikunja/vikunja/commit/fd452b9cb6457fd4f9936527a14c359818f1cca7", "tags": ["x_refsource_MISC"], "url": "https://github.com/go-vikunja/vikunja/commit/fd452b9cb6457fd4f9936527a14c359818f1cca7"}, {"name": "https://vikunja.io/changelog/vikunja-v2.2.2-was-released", "tags": ["x_refsource_MISC"], "url": "https://vikunja.io/changelog/vikunja-v2.2.2-was-released"}], "affected": [{"vendor": "go-vikunja", "product": "vikunja", "versions": [{"version": ">= 0.18.0, < 2.2.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-24T15:30:27.159Z"}, "descriptions": [{"lang": "en", "value": "Vikunja is an open-source self-hosted task management platform. Starting in version 0.18.0 and prior to version 2.2.1, when a user account is disabled or locked, the status check is only enforced on the local login and JWT token refresh paths. Three other authentication paths \u2014 API tokens, CalDAV basic auth, and OpenID Connect \u2014 do not verify user status, allowing disabled or locked users to continue accessing the API and syncing data. Version 2.2.1 patches the issue."}], "source": {"advisory": "GHSA-94xm-jj8x-3cr4", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-33668", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-26T19:30:59.939956Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-26T19:52:13.977Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Vikunja is an open-source self-hosted task management platform. Starting in version 0.18.0 and prior to version 2.2.1, when a user account is disabled or locked, the status check is only enforced on the local login and JWT token refresh paths. Three other authentication paths \u2014 API tokens, CalDAV basic auth, and OpenID Connect \u2014 do not verify user status, allowing disabled or locked users to continue accessing the API and syncing data. Version 2.2.1 patches the issue."}, {"lang": "es", "value": "Vikunja es una plataforma de gesti\u00f3n de tareas de c\u00f3digo abierto autoalojada. A partir de la versi\u00f3n 0.18.0 y antes de la versi\u00f3n 2.2.1, cuando una cuenta de usuario est\u00e1 deshabilitada o bloqueada, la verificaci\u00f3n de estado solo se aplica en el inicio de sesi\u00f3n local y en las rutas de actualizaci\u00f3n de tokens JWT. Otras tres rutas de autenticaci\u00f3n \u2014 tokens de API, autenticaci\u00f3n b\u00e1sica de CalDAV y OpenID Connect \u2014 no verifican el estado del usuario, permitiendo que los usuarios deshabilitados o bloqueados contin\u00faen accediendo a la API y sincronizando datos. La versi\u00f3n 2.2.1 corrige el problema."}], "id": "CVE-2026-33668", "lastModified": "2026-03-25T15:41:58.280", "metrics": {"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"}]}, "published": "2026-03-24T16:16:34.623", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/go-vikunja/vikunja/commit/033922309f492996c928122fb49b691339199c35"}, {"source": "security-advisories@github.com", "url": "https://github.com/go-vikunja/vikunja/commit/04704e0fde4b027039cf583110cee7afe136fc1b"}, {"source": "security-advisories@github.com", "url": "https://github.com/go-vikunja/vikunja/commit/0b04768d830c80e9fde1b0962db1499cc652da0e"}, {"source": "security-advisories@github.com", "url": "https://github.com/go-vikunja/vikunja/commit/fd452b9cb6457fd4f9936527a14c359818f1cca7"}, {"source": "security-advisories@github.com", "url": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-94xm-jj8x-3cr4"}, {"source": "security-advisories@github.com", "url": "https://vikunja.io/changelog/vikunja-v2.2.2-was-released"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-285"}, {"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.18.0,2.2.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "vikunja", "source": "cna", "vendor": "go-vikunja"}, "product": "vikunja", "vendor": "go-vikunja"}], "analysis": {"en": {"generated_at": "2026-03-24T16:20:42.345992+00:00", "value": {"mitigation_remediation": ["Upgrade Vikunja to version 2.2.1 or newer where the issue is fixed."], "summary": {"action": "Patch Immediately", "impact": "Unauthorized Access"}, "threat_synthesis": {"affected_systems": "The affected product is the Vikunja self\u2011hosted task management platform released by go\u2011vikunja. All releases from version 0.18.0 up to, but not including, 2.2.1 are vulnerable. Versions 2.2.1 and later include the fix, as announced in the 2.2.2 changelog.", "description_and_impact": "The vulnerability can be exploited when a user account has been disabled or locked; the system fails to enforce the status check on API token use, CalDAV basic authentication, and OpenID Connect authentication. Because the status is only validated for local login and JWT refresh, an attacker who has knowledge of a disabled or locked account can continue to call the API and sync data with the system. This yields unauthorized read access and the potential for modifying or deleting data, thus compromising confidentiality and integrity. The weakness is reflected in CWE\u2011285 (Improper Privilege Enforcement) and CWE\u2011863 (User Management Operation Error).", "risk_and_exploitability": "With a CVSS score of 7.1 the vulnerability is considered high severity. No EPSS data is available, and it is not listed in the CISA KEV catalog. The likely attack vector is via an API token, CalDAV basic authentication, or an OpenID Connect flow where the user\u2019s disabled or locked status is not checked. The attacker must already possess a valid API token or be able to obtain one using the account credentials; once the token is in hand, no further authentication is required to interact with the API or synchronize data."}}}}, "created": "2026-03-25T11:47:11.791993+00:00", "updated": "2026-03-25T20:49:56.396155+00:00", "vendors": ["go-vikunja", "go-vikunja$PRODUCT$vikunja"]}