High 7.1Published Oct 28, 2026

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

Updated under an hour ago (Oct 29, 2026, 11:10 AM ET)

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It affects Apereo Foundation openEQUELLA. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Apereo Foundation openEQUELLA

Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N
Weakness (CWE): CWE-611
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: MON-CSIRT
NVD analysis: Received
Record last updated: Oct 28, 2026
First seen by InfoSec Signals: Oct 28, 2026

Affected products

Affected products

Apereo Foundation openEQUELLA apereo_foundation:openequella (from the name)	before 2026.1	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.