CVE-2026-6815 CVE-2026-6815

Medium 5.9 Published 11 May 2026 Updated 13 May 2026

An authenticated admin can exploit path traversal in Casdoor's file storage to write arbitrary files, potentially leading to code execution or data modification.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2026-6815?

CVE-2026-6815 is a medium-severity path traversal vulnerability in Casdoor, published on 11 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-22

Which versions are affected by CVE-2026-6815?

3 open source packages ship an affected version, including github.com/casdoor/casdoor. It affects 1 product.

Package	Affected	Fixed in
`github.com/casdoor/casdoor` Go	All versions	None
`github.com/casdoor/casdoor` Go	All versions to `1.1000.0`	None
`github.com/casdoor/casdoor` Go	All versions to `1.1000.0`	None

Products include Casbin Casdoor.

How do I fix CVE-2026-6815?

Upgrade to a fixed version.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-6815 being exploited?

There is no known exploitation of CVE-2026-6815 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry and 1 proofs of concept on GitHub.

Sources

Also known as GHSA-rmxx-v9rj-vpvg, GO-2026-5945.