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    CVE-2026-67615

    openEQUELLA before 2026.1.0 contains an authenticated remote code execution vulnerability that allows any authenticated non-guest user to execute arbitrary code by exploiting Java deserialization in the HTTP invoker endpoint at /invoker/*. Attackers can bypass the class-name denylist enforced by PluginAwareObjectInputStream by nesting a serialized payload inside a java.security.SignedObject, causing the inner stream to be deserialized by a separate ObjectInputStream that does not apply the denylist, ultimately reaching a JNDI sink and enabling code execution.

    Published:Sep 22, 2026
    Last Modified:Oct 29, 2026
    EPS:Sep 22, 2026
    EPSS Score:0.00542
    CVSS Score:8.8

    Affected Products

    Vendor
    Apereo Foundation
    Product
    Openequella

    Exploits

    No exploit reference

    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-2026-66090 (CVSS 7.1) — In openEQUELLA before 2026.1, the XML parser used for item metadata does not disable external entity resolutio…
    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}…

    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