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.

CVSS Vector

References

• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-w7jp-mf2v-8342
• https://www.vulncheck.com/advisories/vikunja-before-2.6.0-denial-of-service-via-decompression-bomb