CVE-2026-35602: 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…

PriorityP340high7.1CVSS 3.1

AVNACLPRLUINSUCNILAH

EPSS

0.34%

25.6th percentile

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

3 ranges

Vendor	Product	Version range	Fixed in
code.vikunja.io	api	>= 0 < 2.3.0	2.3.0
go-vikunja	vikunja	< 2.3.0	2.3.0
vikunja	vikunja	< 2.3.0	2.3.0

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