{"id":"CVE-2026-33678","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-33678","generatedAt":"2026-10-28T09:41:39.145Z","title":"This allows any authenticated user to download or delete any attachment in the system by providing their own accessible task ID with a target attachment ID.","description":"Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, `TaskAttachment.ReadOne()` queries attachments by ID only (`WHERE id = ?`), ignoring the task ID from the URL path. The permission check in `CanRead()` validates access to the task specified in the URL, but `ReadOne()` loads a different attachment that may belong to a task in another project. This allows any authenticated user to download or delete any attachment in the system by providing their own accessible task ID with a target attachment ID. Attachment IDs are sequential integers, making enumeration trivial. Version 2.2.1 patches the issue.","published":"2026-03-24T16:16:35.000Z","lastModified":"2026-06-17T10:37:55.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-639"],"affected":["vikunja/vikunja"],"epss":{"score":0.00318,"percentile":0.24585,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.32%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-jfmm-mjcp-8wq2","tags":["Exploit","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://vikunja.io/changelog/vikunja-v2.2.2-was-released","tags":["Release Notes"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-33678","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}