---
title: "CVE-2023-45727: North Grid Corporation Proself… | CubePath"
description: "Proself Enterprise/Standard Edition Ver5.62 and earlier, Proself Gateway Edition Ver1.65 and earlier, and Proself Mail Sanitize Edition Ver1.08…"
language: en
source: https://cubepath.com/security/cve/CVE-2023-45727
---

# CVE-2023-45727: North Grid Corporation Proself… | CubePath

## Description

Proself Enterprise/Standard Edition Ver5.62 and earlier, Proself Gateway Edition Ver1.65 and earlier, and Proself Mail Sanitize Edition Ver1.08 and earlier allow a remote unauthenticated attacker to conduct XML External Entity (XXE) attacks. By processing a specially crafted request containing malformed XML data, arbitrary files on the server containing account information may be read by the attacker.

Official description from the CVE record, published by jpcert. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2023-45727)

## Key data

### CVSS 3.1 High 7.5

Score published by CISA-ADP in the CVE record.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

| Metric                 | Value     | What it means                                                                       |
| ---------------------- | --------- | ----------------------------------------------------------------------------------- |
| Attack vector          | Network   | The vulnerable component can be reached over a network, possibly from the Internet. |
| Attack complexity      | Low       | No special conditions are needed. The attack can be repeated at will.               |
| Privileges required    | None      | No account or privileges are needed.                                                |
| User interaction       | None      | No action from any user is needed.                                                  |
| Scope                  | Unchanged | The impact stays within the vulnerable component.                                   |
| Confidentiality impact | High      | Serious or total effect on the secrecy of data.                                     |
| Integrity impact       | None      | No effect on the trustworthiness of data.                                           |
| Availability impact    | None      | No effect on availability.                                                          |

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) .

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.04822 (4.8% probability)

Percentile

92.1%

Scores of

Nov 10, 2026

Model

v2026.06.15

### CISA Known Exploited Vulnerabilities

This CVE is listed in the CISA KEV catalog.

Name in the catalog

North Grid Proself Improper Restriction of XML External Entity (XXE) Reference Vulnerability

Added to the catalog

Dec 3, 2024

Federal due date

Dec 24, 2024

### CISA assessment as of Dec 6, 2024

Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA.

Exploitation

Recorded by CISA as active

Automatable

yes

Technical impact

partial

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-611](https://cwe.mitre.org/data/definitions/611.html) Improper Restriction of XML External Entity Reference

## Affected products

Products listed in the CVE record, as the CNA published them.

- North Grid Corporation Proself Enterprise/Standard Edition

  - affected: Ver5.62 and earlier
- North Grid Corporation Proself Gateway Edition

  - affected: Ver1.65 and earlier
- North Grid Corporation Proself Mail Sanitize Edition

  - affected: Ver1.08 and earlier

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [proself.jp/information/153](https://www.proself.jp/information/153/)
- [jvn.jp/en/jp/JVN95981460](https://jvn.jp/en/jp/JVN95981460/)

## Timeline

1. ID reserved Oct 11, 2023
2. Record published Oct 18, 2023
3. Added to CISA KEV Dec 3, 2024
4. Record last updated Oct 21, 2025

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:04 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)