CVE-2026-33474 Details
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.
A denial-of-service vulnerability has been identified in Vikunja, an open-source task management platform, affecting versions 1.0.0-rc0 prior to 2.2.0. The issue arises from unbounded image decoding and resizing during the generation of previews, allowing an attacker to exhaust CPU and memory resources. This can be achieved by uploading highly compressed but extremely large-dimension images. The vulnerability can be exploited by any authenticated user with write access to a task, once task attachments are enabled.
Users are advised to update Vikunja to version 2.2.0 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 24, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/go-vikunja/vikunja/security/advisories/GHSA-wc83-79hj-hpmq | [email protected] | ExploitVendor Advisory |
| https://vikunja.io/changelog/vikunja-v2.2.0-was-released | [email protected] | Release Notes |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| vikunja vikunja | >= 1.0.0, < 2.2.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 27, 2026 | Initial Analysis | [email protected] |
| Mar 24, 2026 | New CVE Received | [email protected] |