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CVE-2026-61372 – Path Traversal / Local File Disclosure – Apache Jena Fuseki through 6.1.0

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Summary

CVE-2026-61372 is a path traversal (local file access restriction bypass) vulnerability in Apache Jena Fuseki. URL references to local resources within SPARQL Update requests were not correctly restricted, allowing an unauthenticated network attacker to access data on the local machine. The issue affects Apache Jena through version 6.1.0 and is rated High (CVSS 7.5).

Technical details

  • Root cause: URL references to local resources in SPARQL Update requests were not correctly restricted (CWE-22: Improper Limitation of a Pathname to a Restricted Directory).
  • Trigger conditions: An attacker submits a SPARQL Update request containing a URL reference that points to local resources on the server.
  • Attack vector: Network — exploitable remotely without authentication or user interaction.
  • Impact: Disclosure of sensitive data residing on the local machine (high confidentiality impact); integrity and availability are not affected.

Affected software

  • Apache Jena Fuseki through 6.1.0.

Severity

  • CVSS v3.1 base score: 7.5 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Mitigation and recommended actions

  • Immediate: Upgrade to Apache Jena 6.2.0, which restricts URL references in SPARQL Update requests to HTTP or FTP protocols and resolves the issue.
  • If no patch: Restrict network access to the Fuseki SPARQL endpoint, and limit who can submit SPARQL Update requests until the upgrade can be applied.

References

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