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CollaboraOnline

CVE-2026-46499: Collabora Online is a collaborative online office suite based on LibreOffice technology. Prior to 24.04.18 and 25.04.11, several document operations delegated t

CVE-2026-46499 Oct 30, 2026 Source: Vendor

Collabora Online is a collaborative online office suite based on LibreOffice technology. Prior to 24.04.18 and 25.04.11, several document operations delegated to `LibreOfficeKit` in the per-document kit process fail to enforce a session's read-only state. A read-only user, such as a viewer-role WOPI user, can send crafted `WebSocket` messages to execute document-mutating `UNO` commands and dialog operations despite the read-only interface. The changes can mislead co-viewers within the live sessi

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-46499
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