{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-123520", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-11-06T00:47:14.649Z", "datePublished": "2026-11-08T01:37:31.078Z", "dateUpdated": "2026-11-08T01:37:31.078Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-11-08T01:37:31.078Z"}, "datePublic": "2026-10-22T00:00:00.000Z", "title": "Vikunja 0.18.0 before 2.7.1 Privilege Escalation via Account Deletion", "descriptions": [{"lang": "en", "value": "Vikunja from 0.18.0 before 2.7.1 contains a privilege escalation vulnerability that allows team owners to gain admin or ownership of read-only shared projects by deleting accounts. Attackers can create a bot, add it to their team, and delete it through the bots endpoint, triggering ensureProjectAdminUser to promote read-only shares and lock out the real owner."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Improper Privilege Management", "cweId": "CWE-269", "type": "CWE"}]}], "affected": [{"vendor": "go-vikunja", "product": "vikunja", "defaultStatus": "unaffected", "packageURL": "pkg:golang/code.vikunja.io/api", "versions": [{"version": "0.18.0", "status": "affected", "versionType": "semver", "lessThan": "2.7.1"}, {"version": "2.7.1", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.18.0", "versionEndExcluding": "2.7.1"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "LOW", "baseScore": 7.1, "baseSeverity": "HIGH"}}], "references": [{"url": "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-hq66-9qg8-jwqg", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-hq66-9qg8-jwqg)"}, {"name": "VulnCheck Advisory: Vikunja 0.18.0 before 2.7.1 Privilege Escalation via Account Deletion", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/vikunja-0.18.0-before-2.7.1-privilege-escalation-via-account-deletion"}], "credits": [{"lang": "en", "value": "lissy93", "type": "reporter"}, {"lang": "en", "value": "dagadjno", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}}}