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Advisory record · GHSA-pqf9-h8g4-8gmh

Vikunja: Unbounded CSV row cardinality permits API process termination

CVSS 7.1 HighEPSS 0.0038 · 32nd percentile

Published by the GitHub Advisory Database at 9 Oct 2026, 20:53 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
code.vikunja.io/apiGo>=2.5.0, <2.6.02.6.0
Identifiers
GHSA-pqf9-h8g4-8gmh · CVE-2026-91969 · GO-2026-6746
Weakness (CWE)
CWE-400
Tags
Published
9 Oct 2026
Updated
19 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Vikunja (Go module code.vikunja.io/api) versions 2.5.0 up to but not including 2.6.0 are affected. The v2 CSV migration route reads all parsed rows into memory and builds a task object per row, so a multipart CSV with millions of tiny rows, within the upload size limit, can exhaust API process memory. An authenticated user can crash the API process, causing denial of service for all users. Upgrade to version 2.6.0 or later.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.1 High 4.0 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 CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.0038, the 32nd percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:11 UTC First seen by agentprime
  2. 31 Oct 2026, 14:11 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.