CVE-2023-45727
North Grid Proself Improper Restriction of XML External Entity (XXE) Reference Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA notes
https://www.proself.jp/information/153/ ; https://nvd.nist.gov/vuln/detail/CVE-2023-45727
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.
Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitation Context
as of October 14, 2026- CISA added CVE-2023-45727 to the KEV catalog 412 days after its CVE record was published. The median for entries added in 2024 is 21.5 days.
- Its current EPSS score (3.5%) is higher than that of 14% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| North Grid Corporation | North Grid Corporation Proself Enterprise/Standard Edition | Ver5.62 and earlier |
| North Grid Corporation | North Grid Corporation Proself Gateway Edition | Ver1.65 and earlier |
| North Grid Corporation | North Grid Corporation Proself Mail Sanitize Edition | Ver1.08 and earlier |
References
2 LinksRecord Details
CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.