---
id: "CVE-2026-111922"
kind: "vulnerability"
aliases: ["CVE-2026-111922"]
title: "Vikunja: permissive CORS lets any localhost page steal login tokens"
severity: "high"
cvss: 7.2
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["browser-session", "localhost", "package", "self-hosted", "vikunja"]
not_affected_if: ["managed-hosting", "version-2.7.0-or-later"]
published_at: "2026-10-17T19:16:34+00:00"
first_seen_at: "2026-10-23T21:57:14+00:00"
updated_at: "2026-10-25T03:29:24+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111922", "first_seen_at": "2026-10-23T21:57:14+00:00"}]
---

# Vikunja: permissive CORS lets any localhost page steal login tokens

Vikunja from 2.2.0 before 2.7.0 trusts every localhost and 127.0.0.1 port for credentialed cross-origin requests, even when a public URL is configured. A malicious page served from any localhost port can call the token refresh endpoint, read the returned bearer JWT and take over the logged-in user's account.

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

## How to check

- Check the installed Vikunja version with `vikunja version` or the running binary's about page; versions from `2.2.0` up to but not including `2.7.0` are affected
- Check whether `service.publicurl` is set in the config; the flaw applies even when it is set

## Fix

- Upgrade Vikunja to `2.7.0` or later
- Until upgraded, avoid running a Vikunja instance alongside untrusted local web services in the same browser profile (unknown for a specific workaround config)

## Timeline

- 2026-10-23T21:57:14+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-111922

## From the sources

Vikunja from 2.2.0 before 2.7.0 contains a permissive CORS configuration that trusts every localhost and 127.0.0.1 port with credentials, even when service.publicurl is set. Attackers controlling a page on any localhost port can send a credentialed request to the token refresh endpoint and read the returned bearer JWT to take over the logged-in user's account.

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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_