CVE WatchJul 30, 2026

CVE-2026-54366

CentreStack before 17.4 contains an XML external entity (XXE) injection vulnerability that allows unauthenticated attackers to exfiltrate ar

CVSS

7.5

High

EPSS

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KEV

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Exploit Today

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0-100

Published: Jul 30, 2026 · Last modified: Jul 30, 2026 · CWE-611

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

CVE-2025-363745.5 MED

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———IBM DataPower Gateway is vulnerable to an XML external entity injection (XXE) attack when processing XML data. A privileged user could exploit this vulnerability to expose sensitive information or consume memory resources.9h CVE-2026-507827.5 HIG

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——0Jinher OA C6 contains an XML External Entity (XXE) injection vulnerability in the /c6/JHSoft.Web.HrmAttendance/sp_manager_getUserlist.aspx/GetXmlHttp endpoint. An unauthenticated remote attacker can send a crafted XML payload to read arbitrary files from the server via an out-of-band attack.9h CVE-2026-540826.5 MED

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——0veraPDF validation model is an implementation of the veraPDF validation model. From 1.25.73 until 1.30.2 and 1.31.71, veraPDF-validation contains an XML External Entity vulnerability in PDFAValidator.validate(...) and GFPDAcroForm.getdynamicRender(), where default DocumentBuilderFactory parsing of rich-text annotation or form-field values and XFA configurations in untrusted PDFs can allow local file disclosure and outbound network requests. This issue is fixed in versions 1.30.2 and 1.31.71.9h CVE-2026-54079—

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——0veraPDF validation provides PDF/A and PDF/UA validation, feature reporting, and metadata repair. From 1.17.35 until 1.30.2 and 1.31.71, veraPDF-validation contains an XML External Entity (XXE) vulnerability in validation-model/src/main/java/org/verapdf/gf/model/impl/pd/GFPDAcroForm.java in the getdynamicRender() method, where a crafted PDF containing a malicious XFA stream can cause external entity expansion during PDF/UA-1 validation and allow local file disclosure or outbound server-side requests. This issue is fixed in versions 1.30.2 and 1.31.71.9h CVE-2026-54078—

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——0veraPDF validation model is an implementation of the veraPDF validation model. From 1.25.73 until 1.30.2 and 1.31.71, veraPDF-validation contains an XML External Entity (XXE) vulnerability in validation-model/src/main/java/org/verapdf/gf/model/tools/DictionaryKeysHelper.java in getRichTextStringOrStreamEntryStringRepresentation(), where a crafted PDF containing a malicious rich-text /RC or /RV entry can cause external entity expansion and reflect local file contents into the validation report. This issue is fixed in versions 1.30.2 and 1.31.71.9h CVE-2026-57917—

3.4%

——1proCertum SmartSign parses external XML entities from arbitrary crafted signature files, enabling SSRF and potentially allowing the reading of local files, depending on the parser's configuration. The XML External Entity (XXE) vulnerability is triggered simply by previewing a file in the file selection window, before the victim clicks “Open”. This issue was fixed in version 9.4.3.90.12h