CVE-2026-35602
Medium
Description
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.
SeverityMedium
CVSS5.4
Exploit probability27. percentile0.3%
ProductVikunja
PublishedApr 10, 2026
First seenApr 10, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- vikunja vikunja2.3.0 or later
- code.vikunja.io/api2.3.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| vikunja vikunja | v < 2.3.0 | 2.3.0 |
| code.vikunja.io/apiGo | v < 2.3.0, No range specified | 2.3.0 |
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