CVE-2026-27819
High · 7.2CVSS
7.2
EPSS
0.9%
Published
Feb 25, 2026
CISA due date
—
The record
Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, the restoreConfig function in vikunja/pkg/modules/dump/restore.go of the go-vikunja/vikunja repository fails to sanitize file paths within the provided ZIP archive. A maliciously crafted ZIP can bypass the intended extraction directory to overwrite arbitrary files on the host system. Additionally, we’ve discovered that a malformed archive triggers a runtime panic, crashing the process immediately after the database has been wiped permanently. The application trusts the metadata in the ZIP archive. It uses the Name attribute of the zip.File struct directly in os.OpenFile calls without validation, allowing files to be written outside the intended directory. The restoration logic assumes a specific directory structure within the ZIP. When provided with a "minimalist" malicious ZIP, the application fails to validate the length of slices derived from the archive contents. Specifically, at line 154, the code attempts to access an index of len(ms)-2 on an insufficiently populated slice, triggering a panic. Version 2.0.0 fixes the issue.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | code.vikunja.io/api | 0 | No fix |
| openSUSE:Leap 15.6 | govulncheck-vulndb | 0 | 0.0.20260317T205859-150000.1.152.1 |
Related vulnerabilities
- GHSA-42wg-38gx-85rh Vikunja has Path Traversal in CLI Restore Same vulnerability
- GHSA-rfjg-6m84-crj2 Vikunja Vulnerable to Account Takeover via Password Reset Token Reuse Also affects code.vikunja.io/api
- CVE-2026-28268 Vikunja is an open-source self-hosted task management platform. Also affects code.vikunja.io/api
- GHSA-7jp5-298q-jg98 Vikunja: Stored XSS via Unsanitized SVG Attachment Upload Leads to Token Exposure Also affects code.vikunja.io/api
- CVE-2026-27575 Vikunja is an open-source self-hosted task management platform. Also affects code.vikunja.io/api
- CVE-2026-27616 Vikunja is an open-source self-hosted task management platform. Also affects code.vikunja.io/api
- CVE-2026-27116 Vikunja is an open-source self-hosted task management platform. Also affects code.vikunja.io/api
- GHSA-3ccg-x393-96v8 Vijkunja has Weak Password Policy Combined with Persistent Sessions After Password Change Also affects code.vikunja.io/api