CVE-2026-66090

High

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.

SeverityHigh

CVSS7.1

Exploit probability—

ProductopenEQUELLA

PublishedOct 29, 2026

First seenNov 4, 2026

Weakness typeCWE-611XML external entity (XXE)

How to fix

Update

Apereo Foundation openEQUELLA2026.1 or later

Vendor advisories

github.com/openequella/openEQUELLA/security/advisories/GHSA-668q-3hpr-6c96

Affected products

Product	Affected versions	Fixed in
Apereo Foundation openEQUELLA	v < 2026.1	2026.1

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