CVE-2026-57458
highVikunja is an open-source self-hosted task management platform.
Vikunja is an open-source self-hosted task management platform. In version 2.3.0, a scoped API token limited to the `oauth.authorize` permission can call `POST /api/v1/oauth/authorize`, obtain an OAuth authorization code, and exchange the code at `POST /api/v1/oauth/token` for a normal bearer JSON Web Token (JWT) and refresh token. The resulting credentials are not restricted by the original API token's permissions, allowing access to routes outside its declared scope for the same user. Version 2.4.0 fixes the vulnerability.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/go-vikunja/vikunja/commit/4ae2e093014881052ed8f8ecd8bcb9adf83dd276 security-advisories@github.com
- https://github.com/go-vikunja/vikunja/releases/tag/v2.4.0 security-advisories@github.com
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v3p6-34mc-hj7v security-advisories@github.com
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-v3p6-34mc-hj7v 134c704f-9b21-4f2e-91b3-4a467353bcc0