CVE-2026-54366
CentreStack < 17.4 XXE via SharePoint Storage Configuration
- State
- Published
- Severity
- 8.7 High
- Published
- Jul 30, 2026
- Updated
- Aug 14, 2026
- Reserved
- Jun 12, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-611 Improper Restriction of XML External Entity Reference
Affected Products
| Product | Versions |
|---|---|
CentreStackGladinet |
|
References
- Product Homepageproduct
- https://www.vulncheck.com/advisories/centrestack-xxe-via-sharepoint-storage-configurationthird-party-advisory
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