CVE-2023-45727
High 7.5 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- North Grid Proself Improper Restriction of XML External Entity (XXE) Reference Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
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.
Metrics
- CVSS 3.1
-
7.5 (HIGH)
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 5% (percentile: 92) as of 2 November 2026
- CWE
- CWE-611
Affected products
northgrid: proself
References
- https://www.proself.jp/information/153/ Vendor Advisory
- https://www.proself.jp/information/153/ Vendor Advisory
- https://jvn.jp/en/jp/JVN95981460/ Third Party Advisory
- https://jvn.jp/en/jp/JVN95981460/ Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023… US Government Resource