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    CVE-2026-63277

    LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. A document could name a Java database driver for such a link to be loaded from a remote location, so opening the document could run Java code from that location. In fixed versions an entry in a Java class path has to be a file URL.

    Published:Oct 5, 2026
    Last Modified:Oct 6, 2026
    EPS:Oct 5, 2026
    EPSS Score:0.00145
    CVSS Score:7.8

    Affected Products

    Vendor
    The Document Foundation
    Product
    Libreoffice

    Exploits

    https://github.com/HORKimhab/CVE-2026-63277

    Related CVEs

    CVE-2026-63270 (CVSS 6.7) — URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive inf…
    CVE-2026-63269 (CVSS 6.7) — LibreOffice can link to audio and video files from a document, and on Linux it plays them with GStreamer. A li…
    CVE-2026-63267 (CVSS 6.7) — LibreOffice Calc can link a cell range to an external csv data source, and the link is saved in the document. …
    CVE-2026-63268 (CVSS 6.7) — LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. A li…
    CVE-2026-63266 (CVSS 6.8) — LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. Thro…
    CVE-2026-63279 (CVSS 5.4) — LibreOffice can import PICT images, which may be embedded in documents. An out of bounds read existed when imp…
    CVE-2026-63278 (CVSS 6.7) — URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive inf…
    CVE-2026-63276 (CVSS 5.4) — LibreOffice converts CFF fonts to Type 1 when it subsets a font, which happens when a document is exported to …
    CVE-2026-63275 (CVSS 5.4) — LibreOffice can read CFF fonts, which may be embedded in documents. A stack buffer overflow existed when readi…
    CVE-2026-63274 (CVSS 5.4) — LibreOffice Draw can import PDF documents. A heap buffer overflow existed when importing a stream object. The …

    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