CVE-2026-66090

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

HIGH
7.1
CVSS Score
Published: October 29, 2026 at 01:37 AM UTC
Updated: October 29, 2026 at 03:56 PM UTC
1 product affected across 1 vendoropenEQUELLA

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Severity
HIGH7.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHMON-CSIRT
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-611

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