CVE-2026-66090: high-severity vulnerability in Apereo Foundation openEQUELLA
XML External Entity (XXE) Injection in Metadata Field Allows Arbitrary File Read
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.3%
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N
Affected products
Apereo Foundation · openEQUELLARelated CVEs — Apereo Foundation openEQUELLA
In the same product, most dangerous first.
CVE-2026-66088CRITICALUnrestricted Command Execution via system.executeEPSS 0.7%CVE-2026-67615HIGHopenEQUELLA < 2026.1.0 Authenticated RCE via Java Deserialization in HTTP InvokerEPSS 0.5%CVE-2026-66091MEDIUMUnauthenticated IDOR Enables Disclosure of Other Users’ last-known detailsEPSS 0.4%CVE-2026-66092MEDIUMStored XSS in pre-login notice via reachable legacy logon routeEPSS 0.3%CVE-2026-16889MEDIUMStored XSS via Pre-Login Notice Image Upload Serves Attacker HTML from Application OriginEPSS 0.3%CVE-2026-66089MEDIUMXML External Entity (XXE) Vulnerability in SOAP Interface Allows External Entity ExpansionEPSS 0.3%