HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-54366 — CentreStack before 17.4 contains an XML external entity (XXE) injection vulnerab...

·Source: NIST NVD

Updated:

Executive Summary

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

Analysis

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. CVSS Score: 7.5. Published: 2026-07-30T13:16:51.640.

Indicators of Compromise (1)

CVE (1)
CVE-2026-54366
Source Attribution

Originally published by NIST NVD on Jul 30, 2026. Verified by: NIST.

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