CVE-2026-54366

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://www.centrestack.com/
https://www.vulncheck.com/advisories/centrestack-xxe-via-sharepoint-storage-configuration

Configurations

No configuration.

History

30 Jul 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-30 13:16

Updated : 2026-07-30 16:45

NVD link : CVE-2026-54366

Mitre link : CVE-2026-54366

CVE.ORG link : CVE-2026-54366

JSON object : View

Products Affected

No product.

CWE

CWE-611

Improper Restriction of XML External Entity Reference

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