CVE-2026-91968

MediumCVSS 6.5/10Last modified Sep 16, 2026

Description

vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the task-filter endpoint that accepts deeply nested filter expressions without recursion depth limits. Authenticated attackers can supply thousands of nested parentheses in the filter query parameter to exhaust memory and terminate the API process.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-674

Affected software

Vendor	Product	Versions
go-vikunja	vikunja	>= 2.5.0, < 2.6.0

References

Timeline

Published: Sep 15, 2026
Last modified: Sep 16, 2026
NVD status: Deferred

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