Answer in brief
CVE-2026-66090 records a High severity (CVSS 7.1) vulnerability in XML External Entity (XXE) Injection in Metadata Field Allows Arbitrary File Read. The current sources do not mark it as known exploited. The current feed maps Apereo Foundation/openEQUELLA (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Apereo Foundation/openEQUELLA (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Apereo Foundation/openEQUELLAgeneric | >=0 <2026.1 | 2026.1 |
Published upstream
Oct 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 29, 2026
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.
Quoted source text, attributed separately from HOL analysis.