CVE-2026-111917

Medium

Description

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.

SeverityMedium

CVSS6.5

Exploit probability—

ProductCode.vikunja.io/api

PublishedOct 17, 2026

First seenOct 17, 2026

Weakness typeCWE-613CWE-613

How to fix

Update

code.vikunja.io/api2.7.0 or later

Vendor advisories

github.com/go-vikunja/vikunja/security/advisories/GHSA-4hv6-xc92-j86g

Affected products

Product	Affected versions	Fixed in
code.vikunja.io/apiGo	2.3.0 ≤ v < 2.7.0, No range specified	2.7.0

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