CVE-2026-35602
Vikunja has a File Size Limit Bypass via Vikunja Import
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
11th
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.
| CWE | CWE-770 |
| Vendor | go-vikunja |
| Product | vikunja |
| Published | Apr 10, 2026 |
| Last Updated | Apr 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
go-vikunja / vikunja
< 2.3.0