CVE-2026-123525 Details
Description
Vikunja before 2.7.1 allocates memory without limits in its Trello, Todoist and Microsoft To Do migration importers, which buffer remote attachment downloads and API responses in memory without size caps. Authenticated users can start a migration that references huge attacker-served attachments or yields oversized API responses, exhausting memory and crashing the shared API process for all tenants.
A denial-of-service vulnerability has been identified in Vikunja versions prior to 2.7.1. The issue arises in the Trello, Todoist, and Microsoft To Do migration importers, where the application allocates memory without limits. These importers buffer remote attachment downloads and API responses in memory without size caps. Authenticated users can initiate migrations that reference large attacker-served attachments or generate oversized API responses, leading to memory exhaustion and crashing the shared API process for all tenants.
Users can update to Vikunja version 2.7.1 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 8, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-770 | Allocation of Resources Without Limits or Throttling | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Vikunja | <= 2.7.0 (semver) |
CPE
Remediation
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Change History
1 change record found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 8, 2026 | New CVE Received | [email protected] |