---
id: CVE-2026-123495
title: Vikunja 2.0.0 before 2.7.1 Login CSRF via /api/v2 Login and OIDC Callback
summary: >-
  Vikunja 2.0.0 before 2.7.1 accepts form-encoded bodies on the /api/v2 login
  and OIDC callback endpoints without CSRF or Origin checks, enabling login
  cross-site request forgery. An attacker with an account can lure a victim to a
  page pos…
severity: medium
cvss: 4.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-352
vendor: go-vikunja
product: vikunja
affected:
  - vikunja >= 2.0.0 < 2.7.1
published: '2026-11-08'
updated: '2026-11-08'
sourceUpdated: '2026-11-08T01:37:13.573Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-123495'
references:
  - url: >-
      https://github.com/go-vikunja/vikunja/security/advisories/GHSA-frf4-3prf-3vch
    label: GitHub Security Advisory (GHSA-frf4-3prf-3vch)
  - url: >-
      https://www.vulncheck.com/advisories/vikunja-2.0.0-before-2.7.1-login-csrf-via-api-v2-login-and-oidc-callback
    label: >-
      VulnCheck Advisory: Vikunja 2.0.0 before 2.7.1 Login CSRF via /api/v2
      Login and OIDC Callback
tags:
  - cve.org
ingestedAt: '2026-11-08T02:43:18.707Z'
---

## Overview

Vikunja 2.0.0 before 2.7.1 accepts form-encoded bodies on the /api/v2 login and OIDC callback endpoints without CSRF or Origin checks, enabling login cross-site request forgery. An attacker with an account can lure a victim to a page posting the attacker's credentials or OIDC code, switching the victim into the attacker's account and exposing data the victim then adds.

## Affected

- `vikunja >= 2.0.0 < 2.7.1`

## Remediation

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