medium5.4
CVE-2026-35602
Vikunja is an open-source self-hosted task management platform.
Impact
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the Vikunja file import endpoint uses the attacker-controlled Size field from the JSON metadata inside the import zip instead of the actual decompressed file content length for the file size enforcement check. By setting Size to 0 in the JSON while including large compressed file entries in the zip, an attacker bypasses the configured maximum file size limit. This vulnerability is fixed in 2.3.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | code.vikunja.io/api | <= 2.2.2 | 2.3.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Vikunja | Vikunja | before 2.3.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/go-vikunja/vikunja/pull/2575
- https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-qh78-rvg3-cv54
- https://github.com/advisories/GHSA-qh78-rvg3-cv54
- https://nvd.nist.gov/vuln/detail/CVE-2026-35602