# CVE-2026-111922: Vikunja 2.2.0 before 2.7.0 Permissive CORS Policy Trusting Localhost Origins

> Attackers on localhost can steal JWT tokens via permissive CORS to take over user accounts in Vikunja.

- **Severity:** High 7.2 (`CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 17 Oct 2026
- **Updated:** 19 Oct 2026
- **Also known as:** GHSA-m687-p538-r5hp, GHSA-r87c-f263-6pfc, GO-2026-6739

## What is CVE-2026-111922?

CVE-2026-111922 is a high-severity vulnerability in go-vikunja vikunja, published on 17 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Vikunja from 2.2.0 before 2.7.0 contains a permissive CORS configuration that trusts every localhost and 127.0.0.1 port with credentials, even when service.publicurl is set. Attackers controlling a page on any localhost port can send a credentialed request to the token refresh endpoint and read the returned bearer JWT to take over the logged-in user's account.

Weakness: CWE-942 (Permissive Cross-domain Security Policy with Untrusted Domains)

## Which versions are affected by CVE-2026-111922?

3 open source packages ship an affected version, including code.vikunja.io/api.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `code.vikunja.io/api` | Go | All versions | None |
| `code.vikunja.io/api` | Go | From 2.2.0 to 2.6.0 | None |
| `code.vikunja.io/api` | Go | From 2.2.0 to 2.6.0 | None |

## How do I fix CVE-2026-111922?

No fix has been published for CVE-2026-111922 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-111922 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111922 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-111922 and fix it if it is affected.

What it is: CVE-2026-111922 is a high-severity vulnerability in go-vikunja vikunja, published on 17 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111922 exists.

Affected packages and fixed versions:
- code.vikunja.io/api (Go): affected all versions; no fix listed
- code.vikunja.io/api (Go): affected from 2.2.0 up to 2.6.0; no fix listed
- code.vikunja.io/api (Go): affected from 2.2.0 up to 2.6.0; no fix listed

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-111922/ (Markdown: https://insights.sbomify.com/CVE-2026-111922/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-111922
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-111922
- OSV: https://osv.dev/vulnerability/CVE-2026-111922

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-111922/
Summaries are generated and may contain mistakes; the official description above is the record.