Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| go-vikunja | vikunja | < 2.6.0 | 2.6.0 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | code.vikunja.io/api | < 2.6.0 | 2.6.0 | GHSA-vfxw-3x8p-2vjr |
| Go | code.vikunja.io/api | all versions | — | GO-2026-6752 |
References
- GitHub Security Advisory (GHSA-vfxw-3x8p-2vjr) vendor-advisory
- VulnCheck Advisory: Vikunja before 2.6.0 User Enumeration via v2 API third-party-advisory