---
id: "GHSA-w2ch-4xgr-22ww"
kind: "vulnerability"
aliases: ["GHSA-w2ch-4xgr-22ww", "GO-2026-6754"]
title: "Vikunja: Task relation deletion does not check read access to the other task, allowing cross-project relation removal in code.vikunja.io/api"
severity: "medium"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: [{"name": "code.vikunja.io/api", "fixed": [], "affected": "all versions", "ecosystem": "go"}]
ecosystems: ["go"]
tags: ["go", "package", "self-hosted", "vikunja"]
not_affected_if: ["version-at-or-above-v2.6.0"]
published_at: "2026-10-19T21:08:26+00:00"
first_seen_at: "2026-10-23T19:13:08+00:00"
updated_at: "2026-10-23T20:15:24+00:00"
sources: [{"source": "govuln", "url": "https://pkg.go.dev/vuln/GO-2026-6754", "first_seen_at": "2026-10-23T19:13:08+00:00"}]
---

# Vikunja: Task relation deletion does not check read access to the other task, allowing cross-project relation removal in code.vikunja.io/api

Vikunja's Go API module (code.vikunja.io/api) does not check read access to the other task when deleting a task relation, so a user can remove relations between tasks in projects they cannot read. The sources do not state the exact privilege or data exposure beyond removing relations across projects.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- go:code.vikunja.io/api affected all versions fixed ?

## How to check

Check whether your go.mod pins code.vikunja.io/api below v2.6.0 (run: go list -m code.vikunja.io/api).

## Fix

Upgrade code.vikunja.io/api to v2.6.0 or later.

## Timeline

- 2026-10-23T19:13:08+00:00 govuln https://pkg.go.dev/vuln/GO-2026-6754

## From the sources

Vikunja: Task relation deletion does not check read access to the other task, allowing cross-project relation removal in code.vikunja.io/api.

NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.

(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)

The additional affected modules and versions are: code.vikunja.io/api from v0.9.0 before v2.6.0.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_