All vulnerabilities
CVE-2026-66090GHSA-668q-3hpr-6c96

openEQUELLA: XML External Entity (XXE) Injection in Metadata Field Allows Arbitrary File Read

Apereo Foundation openEQUELLA
Open in ThreatlineRecord JSON
CVSS
7.1High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in2026.1Fixed versionCVE List
Published29 Oct 2026Updated 29 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

In openEQUELLA before 2026.1, the XML parser used for item metadata does not disable external entity resolution. A user permitted to create items (CREATE_ITEM) can submit crafted XML to POST /api/item and cause the server to read arbitrary files accessible to the openEQUELLA service, or make requests to attacker-specified locations (SSRF), including cloud instance metadata services.

Text from CVE List

Affected versions 1

  • openEQUELLAaffected: all versions before 2026.1CVE List

References 2