---
id: CVE-2026-6815
aliases:
  - GHSA-rmxx-v9rj-vpvg
title: >-
  Casdoor: Arbitrary file write possible through Local File System storage
  provider
summary: >-
  Casdoor: Arbitrary file write possible through Local File System storage
  provider
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'
vendor: casdoor
product: github.com/casdoor/casdoor
ecosystem: go
affected:
  - github.com/casdoor/casdoor <= 1.1000.0
published: '2026-05-11'
updated: '2026-07-08'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-rmxx-v9rj-vpvg'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-6815'
  - url: 'https://github.com/casdoor/casdoor'
  - url: 'https://kb.cert.org/vuls/id/937808'
  - url: 'https://www.kb.cert.org/vuls/id/937808'
tags:
  - osv
  - go
  - exploit-available
epss: 0.00513
epssPercentile: 0.42732
exploitAvailable: true
ingestedAt: '2026-07-09T18:56:36.905Z'
exploits:
  exploitdb: true
  github: 1
  githubRepos:
    - 'https://github.com/danilo-dellorco/CVE-2026-6815'
  checkedAt: '2026-09-24T07:53:13.153Z'
---

## Overview

An arbitrary file write vulnerability exists in Casdoor's Local File System storage provider. Due to insufficient path sanitization, an authenticated attacker with administrative privileges can perform a Path Traversal attack to create or overwrite arbitrary files anywhere on the host filesystem, bypassing the application's intended storage sandbox.

## Affected packages

- `github.com/casdoor/casdoor <= 1.1000.0`

## Remediation

Refer to the advisory for the patched release.