CVE-2026-6815: An arbitrary file write vulnerability exists in Casdoor's Local File System storage provider

Q: How do I fix CVE-2026-6815?

casdoor: upgrade to newer than 2.328.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-6815 being exploited?

CVE-2026-6815 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-6815 affect?

CVE-2026-6815 affects casdoor. Severity is medium (CVSS 5.9). 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 o

Q: How urgent is CVE-2026-6815?

Priority 37/100. Public exploit reference

Routine

MEDIUM 5.9UPGRADE

CVE-2026-6815 is a medium-severity flaw (CVSS 5.9) affecting casdoor. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-05-11
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: casbin

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-11 16:17 UTCPublished CVE record published
2026-06-17 11:01 UTCUpdated Record last modified

casbin casdoor UPGRADE

Affected: <= 2.328.0

Fixed in: newer than 2.328.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy casdoor || rpm -q casdoor || casdoor --version

2. UPGRADE to newer than 2.328.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade casdoor

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade casdoor

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Casdoor 3.54.1 - Arbitrary File Write via Path Traversal

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-6815?

casdoor: upgrade to newer than 2.328.0. Exact commands for each OS are on this page.

Is CVE-2026-6815 being exploited?

CVE-2026-6815 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-6815 affect?

CVE-2026-6815 affects casdoor. Severity is medium (CVSS 5.9). 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 o

How urgent is CVE-2026-6815?

Priority 37/100. Public exploit reference

References

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