CVE-2026-111922: Vikunja permissive CORS configuration account takeover

CVE-2026-111922 · Severity: medium · CVSS 6.3 · Published 2026-10-17

Vikunja is a task management and productivity application that allows users to organize projects and tasks. The application has a misconfigured cross-origin policy that trusts all localhost connections with credentials, allowing an attacker running a malicious page on any local port to steal the logged-in user's authentication token and take over their account.

Technologies: code.vikunja.io/api (Go), Vikunja. Vendors: Go, Vikunja.

Quick answers

Is CVE-2026-111922 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-111922 being exploited in the wild.
How severe is CVE-2026-111922?
Medium severity, with a CVSS score of 6.3, published 17 October 2026.
Which products and versions are affected?
code.vikunja.io/api (Go) SEMVER:introduced=0; Vikunja 2.2.0 to 2.6.0.
Is there a fix for CVE-2026-111922?
Yes: fixed in 2.7.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-111922 attacked?
It is attacked with local access or over the network, in a web application.
Am I affected by CVE-2026-111922?
Check whether you run code.vikunja.io/api (Go) or Vikunja at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 2.7.0

Technical details

Vikunja's CORS middleware defaults to trusting http://127.0.0.1:* and http://localhost:* origins with AllowCredentials=true, and this list is appended to rather than replaced by the configured publicurl. An attacker-controlled page on any localhost port can issue a credentialed fetch to the token refresh endpoint (/api/v1/login/refresh), which authenticates via HttpOnly cookie and returns a bearer JWT in the response body, allowing full account takeover. The SameSite=None cookie policy when using HTTPS further enables this cross-origin attack.

Affected products

  • Vikunja Vikunja 2.2.0 to 2.6.0

Identifiers

  • CVE-2026-111922
  • GHSA-m687-p538-r5hp
  • GO-2026-6739

Timeline

  • 2026-10-03: disclosed
  • 2026-10-17: advisory

References

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