CVE-2026-33474 json
Vikunja Affected by DoS via Image Preview Generation
published 2026-03-20 7 mo ago modified 2026-06-17 4 mo ago also GHSA-wc83-79hj-hpmq , GO-2026-4811 , EUVD-2026-20082
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 25%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go code.vikunja.io/api 2.2.0
- vikunja vikunja 2.2.0
- govulncheck-vulndb openSUSE Leap 15.6 0.0.20260326T203309-150000.1.155.2
suse advisories SUSE-SU-2026:1135-1
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/go-vikunja/vikunja/security/advisories/GHSA-wc83-79hj-hpmq referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | code.vikunja.io/api | >=1.0.0-rc0, <2.2.0 all versions |
2.2.0 |
Affected products
- go-vikunja vikunja
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
github.com
/go-vikunja/vikunja/security/advisories/GHSA-wc83-79hj-hpmq
web, exploit, vendor-advisory, advisory
-
vikunja.io
/changelog/vikunja-v2.2.0-was-released
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-33474
advisory
-
github.com
/go-vikunja/vikunja
package
Sources
- CVE List CVE-2026-33474
- GitHub Advisory GHSA-wc83-79hj-hpmq
- NVD CVE-2026-33474
- OSV GO-2026-4811
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.