Disclosure summary
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.
Source-reported weakness categories
CWE-269
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST NVD · NVD-CVE-2026-57458
Open original source · Updated Oct 09, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
GitHub reviewed advisories · GHSA-v3p6-34mc-hj7v
Open original source · Updated Oct 09, 2026
Vikunja: Scoped API token can mint unrestricted OAuth session credentials
GitHub reviewed package advisory. Version ranges and patches are independently attributed; executable descriptions and source code locations are excluded.
Source severity: HIGH
| Vendor | Product / association | Version / bounds |
|---|---|---|
| go | code.vikunja.io/api | = 2.3.0 |
Indexed product associations
These cached associations support search and triage. Confirm applicability, platform conditions, and fixed versions in the original record.
| Vendor | Product | Version | Source / relationship |
|---|---|---|---|
| go | code.vikunja.io/api | = 2.3.0 | GHSA-v3p6-34mc-hj7v / vendor-listed |
Original records & references
- NIST NVD record
- CVE Program record
- security-advisories@github.com
- security-advisories@github.com
- security-advisories@github.com
Repositories cited by this CVE
The saved CVE record references these repositories. A citation can identify affected software, a fix, or related research; it does not verify exploit code. These citations are separate from automated search matches and local association reviews.
- go-vikunja/vikunja CVE record citation
GitHub repository matches
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No stored repository matches
Repository discovery has not recorded an update for this CVE yet.
Discovery progress
0 of 3 discovery queries finished. GitHub returned 0 indexed results; 0 malformed or disallowed results were rejected.
No discovery update has been recorded for this CVE.
View all 0 stored repository matches
PUBLISHED 2026-10-09T21:17:05+00:00
MODIFIED 2026-10-09T21:17:05+00:00
INGESTED 2026-10-11T00:55:12+00:00