CVE-2026-91969CWE-400denial-of-service

CVE-2026-91969

Medium · published September 15, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
27.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
7.1 · 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
EPSS
0.00348 · 27.1th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-09-15T20:17Z
References (2)
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-pqf9-h8g4-8gmh · [email protected]https://www.vulncheck.com/advisories/vikunja-before-2.6.0-resource-exhaustion-via-csv-migration · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 15:18Z
    vikunja before 2.6.0 Resource Exhaustion via CSV Migration
    cvelistv5