XML External Entity (XXE) Injection Affecting rdf4j package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published18 Aug 2026
- disclosed12 Aug 2026
Introduced: 12 Aug 2026
CVE-2026-15803 (opens in a new tab)How to fix?
There is no fixed version for Echo:latest rdf4j.
NVD Description
Note: Versions mentioned in the description apply only to the upstream rdf4j package and not the rdf4j package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
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.