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.
History

Fri, 17 Apr 2026 22:00:00 +0000

Type Values Removed Values Added
First Time appeared Vikunja
Vikunja vikunja
CPEs cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:*
Vendors & Products Vikunja
Vikunja vikunja

Tue, 14 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 13 Apr 2026 13:00:00 +0000

Type Values Removed Values Added
First Time appeared Go-vikunja
Go-vikunja vikunja
Vendors & Products Go-vikunja
Go-vikunja vikunja

Fri, 10 Apr 2026 16:30:00 +0000

Type Values Removed Values Added
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.
Title Vikunja has a File Size Limit Bypass via Vikunja Import
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-10T16:10:39.630Z

Updated: 2026-04-14T14:19:30.140Z

Reserved: 2026-04-03T21:25:12.162Z

Link: CVE-2026-35602

cve-icon Vulnrichment

Updated: 2026-04-14T14:19:17.017Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-10T17:17:03.993

Modified: 2026-04-17T21:49:40.743

Link: CVE-2026-35602

cve-icon Redhat

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