MEDIUM 5.3 NVD
CVE-2026-91981
Vikunja versions before 2.6.0 fail to properly validate link-share tokens in the v2 API user search endpoints. Attackers with a read-only share link can enumera
Vikunja versions before 2.6.0 fail to properly validate link-share tokens in the v2 API user search endpoints. Attackers with a read-only share link can enumerate project users via the projects endpoint and confirm arbitrary usernames exist via the global search endpoint.
References
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-vfxw-3x8p-2vjr
- https://www.vulncheck.com/advisories/vikunja-before-2.6.0-user-enumeration-via-v2-api
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-09-15 via NVD.
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