CVE-2026-54366 – CentreStack < 17.4 XXE via SharePoint Storage Configuration

CVE ID :CVE-2026-54366

Published : July 30, 2026, 1:16 p.m. | 28 minutes ago

Description :CentreStack before 17.4 contains an XML external entity (XXE) injection vulnerability that allows unauthenticated attackers to exfiltrate arbitrary files by supplying a malicious URL to the SharePoint storage configuration handler. Attackers can send a crafted request to the unauthenticated StorageConfig endpoint causing the server to fetch and parse attacker-controlled XML containing external DTD references, resulting in out-of-band file exfiltration of sensitive files such as Web.config, which may contain database credentials and cryptographic key material.

Severity: 8.7 | HIGH

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