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    CVE-2026-66090

    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.

    Published:Oct 29, 2026
    Last Modified:Oct 29, 2026
    EPS:Oct 29, 2026
    EPSS Score:
    CVSS Score:7.1

    Affected Products

    Vendor
    Apereo Foundation
    Product
    Openequella

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-221 Data Serialization External Entities Blowup

    Related CVEs

    CVE-2026-66092 (CVSS 4.8) — In openEQUELLA before 2026.2, the pre-login notice is stored as HTML and rendered on the legacy logon page wit…
    CVE-2026-66091 (CVSS 6.9) — In openEQUELLA before 2026.1, the GET /api/userquery/userinfobackup endpoint performs no authentication or aut…
    CVE-2026-66089 (CVSS 6.1) — In openEQUELLA before 2026.1, the SOAP API parses XML supplied in the stopEdit operation with a parser that re…
    CVE-2026-66088 (CVSS 9.4) — In openEQUELLA before 2026.1, the system.execute() function available to the scripting engine runs supplied op…
    CVE-2026-16889 (CVSS 4.8) — In openEQUELLA before 2026.1, the pre-login notice image upload endpoint (PUT /api/preloginnotice/image/{name}…
    CVE-2026-67615 (CVSS 8.7) — openEQUELLA before 2026.1.0 contains an authenticated remote code execution vulnerability that allows any auth…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High