What’s Vulnerable › Vulnerabilities

CVE-2026-66090: XML External Entity (XXE) Injection in Metadata Field Allows Arbitrary File Read

• Severity: high (CVSS 7.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-29 · updated 2026-10-29
• Weakness: CWE-611

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.

Affected products

• Apereo Foundation openEQUELLA: before 2026.1 — fixed in 2026.1

How to fix

Upgrade to a fixed version: Apereo Foundation openEQUELLA 2026.1. Check the vendor advisory for mitigations.

References

• https://github.com/openequella/openEQUELLA/security/advisories/GHSA-668q-3hpr-6c96
• https://openequella.github.io/guides/

Get alerted when CVE-2026-66090 or the next vulnerability affects your stack