CVE-2026-91970
Medium
Description
Vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the Planka migrator that fails to enforce aggregate memory budgets during migration jobs. Authenticated attackers can submit migration requests pointing to attacker-controlled servers advertising numerous size-compliant attachments, exhausting worker memory and causing denial of service for all users.
SeverityMedium
CVSS6.5
Exploit probability—
ProductCode.vikunja.io/api
PublishedSep 15, 2026
First seenSep 15, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- code.vikunja.io/api2.6.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| code.vikunja.io/apiGo | 2.5.0 ≤ v < 2.6.0, No range specified | 2.6.0 |
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