Medium severity6.5NVD Advisory· Published Sep 15, 2026· Updated Sep 17, 2026
CVE-2026-91979
CVE-2026-91979
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Range: <2.6.0
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-w7jp-mf2v-8342ghsaADVISORY
- github.com/go-vikunja/vikunja/pull/3688ghsa
- github.com/go-vikunja/vikunja/releases/tag/v2.6.0ghsa
- github.com/go-vikunja/vikunja/security/advisories/GHSA-w7jp-mf2v-8342nvd
- nvd.nist.gov/vuln/detail/CVE-2026-91979ghsa
- www.vulncheck.com/advisories/vikunja-before-2.6.0-denial-of-service-via-decompression-bombnvd
News mentions
1- Go Vikunja: Twelve Vulnerabilities Including Privilege Escalation and Auth Bypass Disclosed TogetherVypr Intelligence · Sep 15, 2026