CVE-2026-91969

Medium

Description

vikunja versions before 2.6.0 contain a resource exhaustion vulnerability in the POST /api/v2/migration/csv/migrate endpoint that fails to limit parsed row cardinality. Authenticated attackers can upload multipart CSV files with millions of tiny records to exhaust process memory and terminate the API service.

SeverityMedium

CVSS6.5

Exploit probability—

ProductCode.vikunja.io/api

PublishedSep 15, 2026

First seenSep 15, 2026

Weakness typeCWE-400Uncontrolled resource consumption

How to fix

Update

code.vikunja.io/api2.6.0 or later

Vendor advisories

github.com/go-vikunja/vikunja/security/advisories/GHSA-pqf9-h8g4-8gmh

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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