PT-2026-46058

A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xls parseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2 read. The flaw is detectable with MemorySanitizer MSAN and can lead t...

CVE-2026-26825

A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...

CVE-2026-26825

CVE-2026-26825 affects libxls 1.6.3 when parsing malformed XLS files. The issue is a use-of-uninitialized memory in the heap originating from the OLE layer (ole2_read), reachable via xls_parseWorkBook(). Impact is undefined behavior, potentially incorrect parsing logic or information disclosure; ...