---
title: "CVE-2026-104805: DigitalCanion Backup - Unrestricted File Upload"
description: "DigitalCanion backup restoration functionality contains an unrestricted file upload caused by improper validation of restored TGZ archive files, letting attackers with repository access place arbitrary files, potentially leading to root code execution, exploit requires access to backup repository."
url: https://panop.io/threat-heartbeat/CVE-2026-104805/
---

# CVE-2026-104805 DigitalCanion Backup - Unrestricted File Upload

DigitalCanion backup restoration functionality contains an unrestricted file upload caused by improper validation of restored TGZ archive files, letting attackers with repository access place arbitrary files, potentially leading to root code execution, exploit requires access to backup repository.

CVSS base score 8.5 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.22% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-104805)

## Details

Type

Unrestricted File Upload

Impact

File System Write, Remote Code Execution

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:D/RE:M/U:Amber

Published

5 October 2026

Updated

15 October 2026

Weakness

[CWE-22](https://cwe.mitre.org/data/definitions/22.html)

## Vendor fix

Implement strict validation and file-signature verification for restored archives and enforce backup repository access controls and passwords.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-104805](https://nvd.nist.gov/vuln/detail/CVE-2026-104805)
- [https://digitalcanion.com/en/security-research/#vendor=mitel&status=cna](https://digitalcanion.com/en/security-research/#vendor=mitel&status=cna)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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