CVE-2026-63278

URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive information could be exfiltrated to a remote server on opening a document containing such links. The check added for CVE-2024-12426 did not recognise every way of naming the package content provider, so a URL that named it differently still reached the expansion. In fixed versions the package content provider is matched when the URL is checked.

URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive information could be exfiltrated to a remote server on opening a document containing such links. The check added for CVE-2024-12426 did not recognise every way of naming the package content provider, so a URL that named it differently still reached the expansion. In fixed versions the package content provider is matched when the URL is checked.

URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive information could be exfiltrated to a remote server on opening a document containing such links. The check added for CVE-2024-12426 did not recognise every way of naming the package content provider, so a URL that named it differently still reached the expansion. In fixed versions the package content provider is matched when the URL is checked.

URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive information could be exfiltrated to a remote server on opening a document containing such links. The check added for CVE-2024-12426 did not recognise every way of naming the package content provider, so a URL that named it differently still reached the expansion. In fixed versions the package content provider is matched when the URL is checked.

URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive information could be exfiltrated to a remote server on opening a document containing such links. The check added for CVE-2024-12426 did not recognise every way of naming the package content provider, so a URL that named it differently still reached the expansion. In fixed versions the package content provider is matched when the URL is checked.

URLs could be constructed which expanded environment variable or INI file values, so potentially sensitive information could be exfiltrated to a remote server on opening a document containing such links. The check added for CVE-2024-12426 did not recognise every way of naming the package content provider, so a URL that named it differently still reached the expansion. In fixed versions the package content provider is matched when the URL is checked.

Arbitrary file write via calcext:data-mappings, sql provider and Firebird backup functionality. (CVE-2026-63266) LFI and GET SSRF via calcext:data-mappings and csv provider. (CVE-2026-63267) LFI via calcext:data-mappings, sql provider and sdbc:flat:file:// db href. (CVE-2026-63268) LFI and GET SSRF via GStreamer and HLS playlists. (CVE-2026-63269) Environment/ini-file leaks. (CVE-2026-63270) Heap buffer overflow in WMF text record import. (CVE-2026-63272) Heap buffer overflow in PDF import encryption handling. (CVE-2026-63273) Heap buffer overflow in PDF import stream handling. (CVE-2026-63274) Stack buffer overflow in CFF font hint handling. (CVE-2026-63275) Stack buffer overflow in CFF to Type 1 font conversion. (CVE-2026-63276) RCE via calcext:data-mappings, sql provider and jdbc connector. (CVE-2026-63277) Package URLs can be used to exfiltrate arbitrary INI file values and environment variables. (CVE-2026-63278) Out of bounds read in PICT image import. (CVE-2026-63279)

It was discovered that LibreOffice incorrectly handled WMF image imports. An attacker could possibly use this issue to cause LibreOffice to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-63272)

It was discovered that LibreOffice incorrectly handled PDF document imports. An attacker could possibly use this issue to cause LibreOffice to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-63273, CVE-2026-63274)

It was discovered that LibreOffice incorrectly handled CFF fonts embedded in documents. An attacker could possibly use this issue to cause LibreOffice to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-63275, CVE-2026-63276)

It was discovered that LibreOffice incorrectly validated package URLs. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-63278)

It was discovered that LibreOffice incorrectly handled PICT image imports. An attacker could possibly use this issue to cause LibreOffice to crash, resulting in a denial of service, or obtain sensitive information. (CVE-2026-63279)

It was discovered that LibreOffice incorrectly mitigated out-of-bounds writes via Graphite font actions. An attacker could possibly use this issue to cause LibreOffice to crash, resulting in a denial of service, or execute arbitrary code. (CVE-2026-50593)