CVE-2026-66090

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

State: Published
Severity: 7.1 High
Published: Oct 29, 2026
Updated: Oct 29, 2026
Reserved: Jul 24, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	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	MON-CSIRT

Weaknesses

CWE-611 Improper restriction of XML external entity reference

Affected Products

Product	Versions
openEQUELLAApereo Foundation	before 2026.1Affected

References

https://github.com/openequella/openEQUELLA/security/advisories/GHSA-668q-3hpr-6c96vendor-advisory
https://openequella.github.io/guides/product

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