CVE-2026-15803: XEE
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Eclipse RDF4Jto a version that resolves this vulnerability.Fixed in 5.3.2Patch CVE-2018-1000644
Event History
Frequently Asked Questions
What is the severity of CVE-2026-15803?
The severity of CVE-2026-15803 is rated at 52.
How do I fix CVE-2026-15803?
To fix CVE-2026-15803, upgrade to the latest version of Eclipse RDF4J where the vulnerability has been addressed.
What type of vulnerability is CVE-2026-15803?
CVE-2026-15803 is classified as an XML External Entity (XXE) vulnerability.
What potential impact does CVE-2026-15803 have?
CVE-2026-15803 can allow attackers to exploit XXE processing, potentially leading to unauthorized access to sensitive data.
In which software is CVE-2026-15803 found?
CVE-2026-15803 is found in Eclipse RDF4J.