---
id: "CVE-2026-123507"
page: "https://infrastack.ai/live/CVE-2026-123507"
kind: "vulnerability"
aliases: ["CVE-2026-123507"]
title: "Vikunja: null bucket filter lets project admins crash project views"
severity: "medium"
cvss: 5.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "self-hosted", "vikunja"]
not_affected_if: ["single-user-instance", "version-2.7.1-or-later"]
published_at: "2026-11-08T02:16:38+00:00"
first_seen_at: "2026-11-08T02:21:08+00:00"
updated_at: "2026-11-08T02:25:27+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123507", "first_seen_at": "2026-11-08T02:21:08+00:00"}]
exploit_sources: []
---

# Vikunja: null bucket filter lets project admins crash project views

Link for people: https://infrastack.ai/live/CVE-2026-123507 (this .md is for agents)

Vikunja is a self-hosted task and project manager. A project admin can save a filter-mode bucket configuration with a null filter, which makes every later read of that project view crash and return HTTP 500 to all project members.

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

## How to check

- Check the Vikunja version with the server's version endpoint or the release tag you deployed; affected versions are from `0.24.0` before `2.7.1`.
- Review which users hold project admin rights, since only they can save the bucket configuration.

## Fix

- Vikunja: move to `2.7.1` or later, per the product range in the NVD record.

## Timeline

- 2026-11-08T02:21:08+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-123507

## Documents

- [advisory] Vendor advisory: github.com https://github.com/go-vikunja/vikunja/security/advisories/GHSA-hm4w-h7v8-ch43
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/vikunja-0.24.0-before-2.7.1-denial-of-service-via-nil-bucket-filter

## From the sources

Vikunja from 0.24.0 before 2.7.1 contains a nil pointer dereference vulnerability that allows project admins to break project views by saving a filter-mode bucket configuration with a null filter. Because validateProjectViewFilters skips nil entries, every subsequent read of the view panics in kanban and task collection code, returning HTTP 500 to all project members.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_