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CVE-2026-27819— Vikunja has Path Traversal in CLI Restore

Quick assessment

Affected
go-vikunja vikunja
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。

CVSS 7.2 · High EPSS 0.88% · P58
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
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

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III. Intelligence Information for CVE-2026-27819

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Vendor Pages for CVE-2026-27819 (1)

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
Same vendor: go-vikunja
Same weakness: CWE-22

V. Comments for CVE-2026-27819

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