Medium severity · published Mar 24, 2026
CVE-2026-33474
Vikunja Affected by DoS via Image Preview Generation
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
Vikunja is an open-source self-hosted task management platform. Starting in version 1.0.0-rc0 and prior to version 2.2.0, unbounded image decoding and resizing during preview generation lets an attacker exhaust CPU and memory with highly compressed but extremely large-dimension images. Version 2.2.0 patches the issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VI
vikunja · go-vikunja
>= 1.0.0-rc0, < 2.2.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33474
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33474
Exploit
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-wc83-79hj-hpmq
Release Notes
https://vikunja.io/changelog/vikunja-v2.2.0-was-released
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