---
id: CVE-2026-111917
title: Vikunja 2.3.0 before 2.7.0 WebSocket Authentication Ignores Session Revocation
summary: >-
  Vikunja 2.3.0 before 2.7.0 contains an improper session validation
  vulnerability that allows attackers to keep WebSocket access after revocation
  because handleAuth never checks the JWT sid claim against the sessions table.
  Attackers hold…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-613
vendor: go-vikunja
product: vikunja
affected:
  - vikunja >= 2.3.0 < 2.7.0
published: '2026-10-17'
updated: '2026-10-17'
sourceUpdated: '2026-10-17T18:46:32.545Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111917'
references:
  - url: >-
      https://github.com/go-vikunja/vikunja/security/advisories/GHSA-4hv6-xc92-j86g
    label: GitHub Security Advisory (GHSA-4hv6-xc92-j86g)
  - url: >-
      https://www.vulncheck.com/advisories/vikunja-2.3.0-before-2.7.0-websocket-authentication-ignores-session-revocation
    label: >-
      VulnCheck Advisory: Vikunja 2.3.0 before 2.7.0 WebSocket Authentication
      Ignores Session Revocation
tags:
  - cve.org
ingestedAt: '2026-10-17T19:08:56.688Z'
---

## Overview

Vikunja 2.3.0 before 2.7.0 contains an improper session validation vulnerability that allows attackers to keep WebSocket access after revocation because handleAuth never checks the JWT sid claim against the sessions table. Attackers holding a stolen access token can open or maintain connections to /api/v2/ws after session deletion or TOTP enrollment, continuing to receive the victim's notification.created pushes, including comment, task and project content.

## Affected

- `vikunja >= 2.3.0 < 2.7.0`

## Remediation

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