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CVE-2026-63279

Medium priority
Needs evaluation

LibreOffice can import PICT images, which may be embedded in documents. An out of bounds read existed when importing an image that uses a colour palette. The palette index held in the image data was used without being checked...

1 affected package

libreoffice

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libreoffice Needs evaluation Needs evaluation Needs evaluation Needs evaluation —
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CVE-2026-63278

Medium priority
Needs evaluation

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...

1 affected package

libreoffice

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libreoffice Needs evaluation Needs evaluation Needs evaluation Needs evaluation —
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CVE-2026-63276

Medium priority
Needs evaluation

LibreOffice converts CFF fonts to Type 1 when it subsets a font, which happens when a document is exported to PDF, and CFF fonts may be embedded in documents. A stack buffer overflow existed in that conversion. The converted...

1 affected package

libreoffice

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libreoffice Needs evaluation Needs evaluation Needs evaluation Needs evaluation —
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CVE-2026-63275

Medium priority
Needs evaluation

LibreOffice can read CFF fonts, which may be embedded in documents. A stack buffer overflow existed when reading the hints of a glyph. The number of hints was checked against the wrong bound, so a glyph declaring more hints than...

1 affected package

libreoffice

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libreoffice Needs evaluation Needs evaluation Needs evaluation Needs evaluation —
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CVE-2026-63274

Medium priority
Needs evaluation

LibreOffice Draw can import PDF documents. A heap buffer overflow existed when importing a stream object. The length of the stream was taken from the object's own dictionary and was not checked against the number of bytes actually...

1 affected package

libreoffice

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libreoffice Needs evaluation Needs evaluation Needs evaluation Needs evaluation —
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CVE-2026-63273

Medium priority
Needs evaluation

LibreOffice Draw can import PDF documents. A heap buffer overflow existed when importing an encrypted document. The length of the decryption key was taken from the document's own encryption dictionary and was used to fill a fixed...

1 affected package

libreoffice

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libreoffice Needs evaluation Needs evaluation Needs evaluation Needs evaluation —
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CVE-2026-63272

Medium priority
Needs evaluation

LibreOffice can import WMF graphics, which may be embedded in documents. A heap buffer overflow existed when importing a text record that carries its own character advance widths. The count of advance values and the length of the...

1 affected package

libreoffice

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libreoffice Needs evaluation Needs evaluation Needs evaluation Needs evaluation —
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CVE-2026-8358

Medium priority

Some fixes available 3 of 5

LibreOffice Calc can import tracked changes from a spreadsheet document. A heap buffer overflow existed when a document reused the same change identifier for two different kinds of change. The importer then treated one change...

1 affected package

libreoffice

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libreoffice Fixed Fixed Fixed Needs evaluation —
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CVE-2026-8357

Medium priority

Some fixes available 3 of 5

LibreOffice Calc compiles cell formulas when opening a spreadsheet. A heap buffer overflow existed when compiling a very long formula made up of many opening tokens. The array that tracks nesting depth was allocated one element...

1 affected package

libreoffice

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libreoffice Fixed Fixed Fixed Needs evaluation —
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CVE-2026-8356

Medium priority

Some fixes available 3 of 5

LibreOffice can import presentations in the legacy binary PPT format. A stack buffer overflow existed when importing a colour-replacement record. Two fixed-size colour tables were filled from the file, but the write position was...

1 affected package

libreoffice

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
libreoffice Fixed Fixed Fixed Needs evaluation —
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