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CVE-2026-15803

Quick assessment

Affected
Eclipse Foundation Eclipse RDF4J
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Eclipse RDF4J是美国Eclipse基金会开源的一个支持RDF数据处理的Java框架。 Eclipse RDF4J 5.3.2之前版本存在输入验证错误漏洞，该漏洞源于多个XML解析器入口在解析不可信的基于XML的RDF数据或查询结果时未完全限制XML外部实体处理，允许DOCTYPE声明、外部实体引用和外部DTD加载，可能导致信息泄露。

CVSS 8.7 · High EPSS 0.47% · P41

Affected Version Matrix 1

VendorProduct Version RangeStatus
Eclipse Foundation Eclipse RDF4J < 5.3.2 affected
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I. Basic Information for CVE-2026-15803

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In Eclipse RDF4J, several XML parser entry points do not fully restrict XML External Entity (XXE) processing when parsing untrusted XML-based RDF data or query results, permitting DOCTYPE declarations, external entity references, and external DTD loading. This is due to an incomplete fix for CVE-2018-1000644: the earlier fix did not cover all parser entry points. The issue is resolved in RDF4J 5.3.2, which rejects or disables DOCTYPE declarations, external entities, and external DTD loading by default.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
XML外部实体引用的不恰当限制(XXE)
Source: CVE Program / CVE List V5
Vulnerability Title
Eclipse RDF4J 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Eclipse RDF4J是美国Eclipse基金会开源的一个支持RDF数据处理的Java框架。 Eclipse RDF4J 5.3.2之前版本存在输入验证错误漏洞，该漏洞源于多个XML解析器入口在解析不可信的基于XML的RDF数据或查询结果时未完全限制XML外部实体处理，允许DOCTYPE声明、外部实体引用和外部DTD加载，可能导致信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Eclipse Foundation Eclipse RDF4J 0 ~ 5.3.2 -

II. Public POCs for CVE-2026-15803

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III. Intelligence Information for CVE-2026-15803

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Patches & Fixes for CVE-2026-15803 (1)

Vendor Pages for CVE-2026-15803 (1)

IV. Related Vulnerabilities

Same vendor: Eclipse Foundation
Same weakness: CWE-611