CVE-2026-68581
- Source
- https://cve.org/CVERecord?id=CVE-2026-68581
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68581.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-68581
- Aliases
- Published
- 2026-08-02T12:15:27Z
- Modified
- 2026-10-28T02:30:57Z
- Severity
-
- 8.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Vikunja 0.22.0 through 2.3.0 Authentication Bypass via Principal ID Collision
- Details
-
Vikunja versions 0.22.0 through 2.3.0 fail to validate the principal type in API token management. Because user IDs and link-share IDs are independent numeric sequences and both resolve through a generic web.Auth.GetID() interface, a link-share JWT whose numeric ID equals a target user's ID is treated as that user by the /api/v1/tokens endpoints. An authenticated attacker can obtain a target's numeric user ID via authenticated user search, then create link shares on an attacker-writable project until the link-share sequence reaches that value, and use the resulting link-share JWT to list, create, and delete the target user's API tokens (including issuing a new token with attacker-chosen scopes under the target's permissions). Fixed in version 2.4.0.
- Database specific
{ "cna_assigner": "VulnCheck", "cwe_ids": [ "CWE-863" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68581.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68581.json
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-vvcv-vpph-h844
- https://nvd.nist.gov/vuln/detail/CVE-2026-68581
- https://www.vulncheck.com/advisories/vikunja-through-authentication-bypass-via-principal-id-collision
- https://github.com/go-vikunja/vikunja/commit/95b7e673fb5ee407498fa4b13e8b4c57847a4a0b
- https://github.com/go-vikunja/vikunja/commit/e6b25bd57b537ef9a72b5acdadf446ca5ef77bfa
Affected packages
Git / github.com/go-vikunja/vikunja
Affected ranges
- Type
- GIT
- Repo
- https://github.com/go-vikunja/vikunja
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0.22.0" }, { "fixed": "2.4.0" } ], "source": "AFFECTED_FIELD", "strategy": "StandardRange" }, { "range": [ { "fixed": "e6b25bd57b537ef9a72b5acdadf446ca5ef77bfa" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "95b7e673fb5ee407498fa4b13e8b4c57847a4a0b" } ], "source": "REFERENCES_COMMIT" } ] }