cve.bz

CVE-2026-91979

7.1 highEPSS 0.4%

High (7.1). EPSS 0.4% chance of exploitation in the next 30 days. Fixed in code.vikunja.io/api 2.6.0.

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.

Severity

CVSS 4.0

7.1 high
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

6.5 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
0.4% chance of exploitation in the next 30 days; higher than 37% of CVEs (scores of 2026-10-31)
CWE
CWE-400
Published
Modified
Record from
the NVD, synced

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-w7jp-mf2v-8342Gocode.vikunja.io/api<2.6.02.6.0
GO-2026-6756Gocode.vikunja.io/apiall versionsno fix published

References

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