CVE-2026-26824 | THREATINT

Description

libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table (MSAT) in read_MSAT() is not fully initialized before being consumed by ole2_validate_sector_chain(), which may result in application crashes or potential information disclosure when processing a crafted XLS file

PUBLISHED Reserved 2026-02-16 | Published 2026-06-03 | Updated 2026-06-04 | Assigner mitre

References

github.com/libxls/libxls/issues/155 exploit

github.com/libxls/libxls/issues/155

cve.org (CVE-2026-26824)

nvd.nist.gov (CVE-2026-26824)

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