CVE-2026-91979Vikunja before 2.6.0 Denial of Service via Decompression Bomb
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Vikunja before 2.6.0 fails to limit archive expansion during data import, allowing authenticated users to cause denial of service. Attackers can upload highly compressed files that expand to tens of gigabytes in memory and disk, exhausting server resources and crashing the instance.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-400
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
go-vikunja vikunja go_vikunja:vikunja (from the name) | before 2.6.0; 2.6.0 not affected | CNA record |
References
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-w7jp-mf2v-8342vendor-advisory
- https://www.vulncheck.com/advisories/vikunja-before-2.6.0-denial-of-service-via-decompression-bombthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.