{"affected":[{"defaultStatus":"unaffected","ecosystem":"golang","packageName":"code.vikunja.io/api","product":"vikunja","source":"CNA: VulnCheck","vendor":"go-vikunja","versions":[{"lessThan":"2.7.1","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.7.1","versionType":"semver"}]}],"cveId":"CVE-2026-123513","cwes":["CWE-201"],"description":"Vikunja before 2.7.1 contains a credential exposure vulnerability that allows attackers to steal stored auth tokens by inducing users to switch the frontend API URL. Because checkAndSetApiUrl leaves origin-independent localStorage tokens in place, the bearer token and desktop OAuth refresh token are sent to the attacker's server, enabling account takeover.","epss":{"date":"2026-11-10","percentile":0.16509,"score":0.0025},"exploits":[],"kev":null,"metrics":[{"score":7.6,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":6.8,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},{"score":7.6,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/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"},{"score":6.8,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"}],"modifiedAt":1794333599119,"publishedAt":1794101845882,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj93-wmch-2crq"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/vikunja-before-2.7.1-auth-token-leak-via-api-url-change"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj93-wmch-2crq"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/vikunja-before-2.7.1-auth-token-leak-via-api-url-change"}],"remediation":[],"revision":"f1b097f6e0ad8f362fcffe3aca2e7f1f83f50262b218300d06e6aee2985598f2","sources":[{"modifiedAt":1794333599119,"name":"CNA: VulnCheck","retrievedAt":1794334198899,"url":"https://www.cve.org/CVERecord?id=CVE-2026-123513"},{"modifiedAt":1794104200140,"name":"NVD","retrievedAt":1794118560097,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123513"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794334239010,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-123513"}],"ssvc":{"assessedAt":1794327956714,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Vikunja before 2.7.1 Auth Token Leak via API URL Change","updatedAt":1794334239010}