{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40103", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-09T01:41:38.536Z", "datePublished": "2026-04-10T16:12:27.603Z", "dateUpdated": "2026-04-10T16:12:27.603Z"}, "containers": {"cna": {"title": "Vikunja's Scoped API tokens with projects.background permission can delete project backgrounds", "problemTypes": [{"descriptions": [{"cweId": "CWE-836", "lang": "en", "description": "CWE-836: Use of Password Hash Instead of Password for Authentication", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v479-vf79-mg83", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v479-vf79-mg83"}, {"name": "https://github.com/go-vikunja/vikunja/pull/2584", "tags": ["x_refsource_MISC"], "url": "https://github.com/go-vikunja/vikunja/pull/2584"}, {"name": "https://github.com/go-vikunja/vikunja/commit/6a0f39b252a81fa4b19dc56dc889183acc9225ae", "tags": ["x_refsource_MISC"], "url": "https://github.com/go-vikunja/vikunja/commit/6a0f39b252a81fa4b19dc56dc889183acc9225ae"}, {"name": "https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0"}], "affected": [{"vendor": "go-vikunja", "product": "vikunja", "versions": [{"version": "< 2.3.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-10T16:12:27.603Z"}, "descriptions": [{"lang": "en", "value": "Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's scoped API token enforcement for custom project background routes is method-confused. A token with only projects.background can successfully delete a project background, while a token with only projects.background_delete is rejected. This is a scoped-token authorization bypass. This vulnerability is fixed in 2.3.0."}], "source": {"advisory": "GHSA-v479-vf79-mg83", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's scoped API token enforcement for custom project background routes is method-confused. A token with only projects.background can successfully delete a project background, while a token with only projects.background_delete is rejected. This is a scoped-token authorization bypass. This vulnerability is fixed in 2.3.0."}], "id": "CVE-2026-40103", "lastModified": "2026-04-10T17:17:13.143", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-10T17:17:13.143", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/go-vikunja/vikunja/commit/6a0f39b252a81fa4b19dc56dc889183acc9225ae"}, {"source": "security-advisories@github.com", "url": "https://github.com/go-vikunja/vikunja/pull/2584"}, {"source": "security-advisories@github.com", "url": "https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v479-vf79-mg83"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-836"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}