Gladinet CentreStack up to 17.3 StorageConfig Endpoint xml external entity reference

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.43+

Summaryinfo

A vulnerability, which was classified as critical, has been found in Gladinet CentreStack up to 17.3. This vulnerability affects unknown code of the component StorageConfig Endpoint. This manipulation causes xml external entity reference. This vulnerability is registered as CVE-2026-54366. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Gladinet CentreStack up to 17.3. Affected by this vulnerability is an unknown functionality of the component StorageConfig Endpoint. The manipulation with an unknown input leads to a xml external entity reference vulnerability. The CWE definition for the vulnerability is CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at centrestack.com. This vulnerability is known as CVE-2026-54366 since 06/12/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

Upgrading to version 17.4 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: CentreStack 17.4

Timelineinfo

06/12/2026 CVE reserved
07/30/2026 +48 days Advisory disclosed
07/30/2026 +0 days VulDB entry created
07/30/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: centrestack.com
Status: Confirmed

CVE: CVE-2026-54366 (🔒)
GCVE (CVE): GCVE-0-2026-54366
GCVE (VulDB): GCVE-100-384805

Entryinfo

Created: 07/30/2026 15:00
Changes: 07/30/2026 15:00 (54)
Complete: 🔍
Cache ID: 216::103

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