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Advisory record · GHSA-fprf-r6rv-xg99

Vikunja: Saved filter creation with an empty filter string recalculates task positions across all tenants

CVSS 5.3 MediumEPSS 0.0018 · 7th percentile

Published by the GitHub Advisory Database at 9 Oct 2026, 20:57 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
code.vikunja.io/apiGo>=1.0.0-rc0, <2.7.02.7.0
Identifiers
GHSA-fprf-r6rv-xg99 · CVE-2026-111918 · GO-2026-6731
Weakness (CWE)
CWE-863
Tags
Published
9 Oct 2026
Updated
27 Oct 2026

Machine-written summary

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

Vikunja (code.vikunja.io/api) versions from 1.0.0-rc0 before 2.7.0 are affected. An authenticated user with no accessible projects can create a saved filter with an empty filter string, which causes the server to write position rows for every task in the instance into the user's own views, including tasks belonging to other users. The source describes this as an integrity problem and a write-amplification denial-of-service risk, not a direct disclosure of task content. Upgrade to Vikunja 2.7.0 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
5.3 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.0018, the 7th percentile, on 6 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.