Actively exploited in the wild
North Grid Proself Improper Restriction of XML External Entity (XXE) Reference Vulnerability
North Grid - Proself · Listed in the CISA KEV since 2024-12-03. This indicates confirmed attacks in production environments.
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CVE-2023-45727
HighCVSS 7.5KEVSummary
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.
Risk Assessment
An attacker could access sensitive account information, potentially leading to further attacks.
Recommendation
Update Proself software to the version containing the fix.
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Original NVD description (English source)
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.