6.5

CVE-2026-33474: Vikunja Affected by DoS via Image Preview Generation

Analyzed
AliasesGHSA-wc83-79hj-hpmqGO-2026-4811
Published 24-03-2026Last modified 24-03-2026

Vulnerability summary

CVE-2026-33474 is a medium (CVSS 6.5) Uncontrolled Resource Consumption vulnerability in go-vikunja vikunja. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41.1% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.49%
0%100%
Low · +0.17 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
OPENSUSE-SU-2026:21483-1SUSE-SU-2026:1135-1

Timeline

  1. 24-03-2026
    PublishedVulnerability first disclosed.
  2. 24-03-2026
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

Increase +0.17 pp

From 0.32% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • githubUnverified

    Vikunja

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Code.vikunja.io1 product
  • api≥ 1.0.0-rc0, < 2.2.0 | All versions (No fix recorded)
Go-vikunja1 product
Vikunja1 product

3 vendors · 3 products

References

4 links