CVE-2026-27819— Vikunja has Path Traversal in CLI Restore
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I. Basic Information for CVE-2026-27819
Vulnerability Information
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Vulnerability Title
Vikunja has Path Traversal in CLI Restore
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Vikunja 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vikunja是Vikunja开源的一个待办事项应用程序。 Vikunja 2.0.0之前版本存在安全漏洞，该漏洞源于文件路径清理不足，可能导致任意文件覆盖和进程崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| go-vikunja | vikunja | < 2.0.0 | - |
II. Public POCs for CVE-2026-27819
| # | POC Description | Source Link | Shenlong Link |
|---|
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- Vikunja 2.0.0: Many security fixes and a few breaking changesx_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-27819
Same Patch Batch · go-vikunja · 2026-02-25 · 4 CVEs total
| CVE-2026-27575 | 9.1 CRITICAL | Vijkunja has Weak Password Policy Combined with Persistent Sessions After Password Change |
| CVE-2026-27616 | 7.3 HIGH | Vikunja Vulnerable to Stored Cross-Site Scripting (XSS) via Unsanitized SVG Attachment Upl |
| CVE-2026-27116 | 6.1 MEDIUM | Vikunja has Reflected HTML Injection via filter Parameter in Projects Module |
IV. Related Vulnerabilities
Same product: vikunja
- CVE-2026-40103
Vikunja's Scoped API tokens with projects.background permiss - CVE-2026-35602
Vikunja has a File Size Limit Bypass via Vikunja Import - CVE-2026-35601
Vikunja has an iCalendar Property Injection via CRLF in CalD - CVE-2026-35600
Vikunja has HTML Injection via Task Titles in Overdue Email - CVE-2026-35599
Vikunja has an Algorithmic Complexity DoS in Repeating Task
Same vendor: go-vikunja
- CVE-2026-40103
Vikunja's Scoped API tokens with projects.background permiss - CVE-2026-35602
Vikunja has a File Size Limit Bypass via Vikunja Import - CVE-2026-35601
Vikunja has an iCalendar Property Injection via CRLF in CalD - CVE-2026-35600
Vikunja has HTML Injection via Task Titles in Overdue Email - CVE-2026-35599
Vikunja has an Algorithmic Complexity DoS in Repeating Task
Same weakness: CWE-22
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Industrial Application Software IAS Canias ERP RMI iasReques - CVE-2026-42605
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apko dirFS has a symlink-following path traversal that allow
V. Comments for CVE-2026-27819
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