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CVE-2023-45727

7.5
HIGHCVSS v3.1 Base Score
21.05%
LOW RiskEPSS (96th percentile)
KEV

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.

Published: 10/18/2023
Modified: 10/24/2025
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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

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

Vendor / Product:

North Grid Proself

Required Action:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Due Date: 12/24/2024(OVERDUE)
Added to KEV:

12/3/2024

Notes:

https://www.proself.jp/information/153/ ; https://nvd.nist.gov/vuln/detail/CVE-2023-45727

Vulnerability Summary

CVSS v3 Score

7.5HIGH

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

EPSS Score (Exploitation Probability)

21.05%LOW Exploitation Risk
96th percentile

This vulnerability has a 21.05% probability of being exploited in the next 30 days, ranking higher than 96% of all scored CVEs.

CWE Classification

Related Vulnerabilities

Same Weakness Type(CWE-611)

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CVE-2025-12531HIGH 7.1

IBM InfoSphere Information Server 11.7.0.0 through 11.7.1.6 is vulnerable to an XML external entity injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources.

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Similar SeverityHIGH