CVE-2026-73975: djehuty: Authenticated SPARQL injection in session editing allows writing arbitrary RDF triples
djehuty is a research data repository system developed by 4TU.ResearchData. Prior to version 26.3.2, an authenticated depositor can inject arbitrary SPARQL into a state-modifying (DELETE/INSERT) query by supplying a crafted session name, letting them write (and delete) arbitrary triples anywhere in the RDF store. Because the RDF store is shared across all accounts and datasets, this is an integrity compromise of the whole repository's metadata, not just the attacker's own records. Having a logged-in account is a precondition. djehuty allows self-registration via ORCID/SAML, so this is a low barrier in typical deployments. This issue has been patched in version 26.3.2.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
djehutyto a version that resolves this vulnerability.Fixed in 26.3.2
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker needs a logged-in depositor account. In typical deployments, self-registration through ORCID or SAML makes obtaining such an account a relatively low barrier.
What is the potential impact on a shared repository?
A successful attacker can write or delete arbitrary RDF triples anywhere in the shared RDF store. This can compromise metadata for other accounts and datasets, not only records owned by the attacker.
Which versions are affected and how is it fixed?
Versions before 26.3.2 are affected. Upgrade djehuty to version 26.3.2, which patches the issue.