---
id: CVE-2026-123513
title: Vikunja before 2.7.1 Auth Token Leak via API URL Change
summary: >-
  Vikunja before 2.7.1 contains a credential exposure vulnerability that allows
  attackers to steal stored auth tokens by inducing users to switch the frontend
  API URL. Because checkAndSetApiUrl leaves origin-independent localStorage
  tokens…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-201
vendor: go-vikunja
product: vikunja
affected:
  - vikunja < 2.7.1
published: '2026-11-08'
updated: '2026-11-08'
sourceUpdated: '2026-11-08T01:37:25.882Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-123513'
references:
  - url: >-
      https://github.com/go-vikunja/vikunja/security/advisories/GHSA-rj93-wmch-2crq
    label: GitHub Security Advisory (GHSA-rj93-wmch-2crq)
  - url: >-
      https://www.vulncheck.com/advisories/vikunja-before-2.7.1-auth-token-leak-via-api-url-change
    label: >-
      VulnCheck Advisory: Vikunja before 2.7.1 Auth Token Leak via API URL
      Change
tags:
  - cve.org
ingestedAt: '2026-11-08T02:43:18.695Z'
---

## Overview

Vikunja before 2.7.1 contains a credential exposure vulnerability that allows attackers to steal stored auth tokens by inducing users to switch the frontend API URL. Because checkAndSetApiUrl leaves origin-independent localStorage tokens in place, the bearer token and desktop OAuth refresh token are sent to the attacker's server, enabling account takeover.

## Affected

- `vikunja < 2.7.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.